He had received over 9000 units of FVIII prepared from plasma poo

He had received over 9000 units of FVIII prepared from plasma pools that included donations from a presumed variant CJD-infected UK donor. He had also received 14 units of red blood cells and had undergone several surgical and invasive endoscopic procedures. Estimates of the relative levels of risk to which this individual was exposed through diet, surgery/endoscopy, blood transfusion and receipt of

plasma products suggested that by far the most likely route through which this individual was infected was the receipt of contaminated plasma products [19]. This case represents the first demonstration of variant CJD infection in a haemophilic patient; no clinical cases of variant CJD have been identified to date in a patient treated selleck chemicals with UK-derived clotting factor concentrates. Many of the concerns over the risks of transmission of variant CJD by blood and plasma components could be reduced if a screening test was available

to detect asymptomatic infection. The analytical and practical challenges of developing such a test are considerable, but a number of different approaches are currently underway [26,37]. One of these has been reported recently to be able to detect variant CJD prions in the blood of non-human primates experimentally infected with BSE [38]. Confirmation of this encouraging claim, as well as an assessment of the test analytical parameters, in a peer reviewed publication is awaited. In the meantime, pressure to implement such Palbociclib ic50 a test in individuals deemed to be at increased risk of variant CJD is likely to increase, particularly in the UK. However, even if a screening test

for variant CJD was to become available soon, additional concerns have been voiced over the required sensitivity and specificity, particularly in the absence of a confirmatory test [26]. The need for informed consent for such tests is currently under debate; the lack of any prophylaxis or treatment for prion diseases raises questions over any potential benefit for an individual undergoing testing. Continuing surveillance for variant CJD is required to assess more fully the risks to patients with bleeding disorders who have been exposed see more to potentially infected plasma products. The National Creutzfeldt–Jakob Disease Surveillance Unit (NCJDSU) is supported by the Department of Health and the Scottish Executive. The Brain Bank in NCJDSU is supported by the Medical Research Council (G0900580). I am grateful to Ms Diane Ritchie for providing Fig. 1, to Dr Mark Head for providing Fig. 2 and to the NCJDSU Biomedical Scientists for expert support. I am also indebted to the relatives of patients with prion diseases for giving consent for the use of tissues in research. The author stated that he had no interests which might be perceived as posing a conflict or bias.

Novel rbcL lineages were also detected highlighting the need to c

Novel rbcL lineages were also detected highlighting the need to culture and sequence phytoplankton from the ecoregion. Principal component analysis revealed that nitrate is an important variable that is associated with observed variation in phytoplankton assemblages (operational taxonomic units). This study applied molecular tools to highlight the ecological significance of diatoms, in addition to other chromophytic algal groups in Sundarbans. “
“Symbiotic interactions between pelagic hosts and microalgae have received little attention, although they are widespread in the photic

layer of the world ocean, where they play a fundamental role in the ecology of the planktonic ecosystem. PLX-4720 manufacturer Polycystine radiolarians (including the orders Spumellaria, Collodaria and Nassellaria) are planktonic heterotrophic protists that are widely distributed and often abundant in the ocean. Many polycystines host symbiotic microalgae within their cytoplasm, mostly thought to be the dinoflagellate Scrippsiella nutricula, a species originally described by Karl Brandt in the late nineteenth century PF-562271 mouse as Zooxanthella

nutricula. The free-living stage of this dinoflagellate has never been characterized in terms of morphology and thecal plate tabulation. We examined morphological characters and sequenced conservative ribosomal markers of clonal cultures of the free-living stage of symbiotic dinoflagellates isolated from radiolarian hosts

from the three polycystine orders. In addition, we sequenced symbiont genes directly from several polycystine-symbiont holobiont specimens from different oceanic regions. Thecal plate arrangement of the free-living stage does not match that of Scrippsiella or related genera, and LSU and SSU rDNA-based molecular phylogenies place these symbionts in a distinct clade within the Peridiniales. Both phylogenetic analyses and the comparison of morphological features of culture strains with those reported for other closely related species support the erection of a new genus that we name Brandtodinium gen. nov. and the recombination of S. nutricula as B. nutricula comb. nov. “
“We this website report the genome size and the GC content, and perform a phylogenetic analysis on Botryococcus braunii Kütz., a green, colony-forming, hydrocarbon-rich alga that is an attractive source for biopetroleum. While the chemistry of the hydrocarbons produced by the B race of B. braunii has been studied for many years, there is a deficiency of information concerning the molecular biology of this alga. In addition, there has been some discrepancy as to the phylogenetic placement of the Berkeley (or Showa) strain of the B race.

005), gender (p < 0001), colo-rectal surgery (p = < 0001) QOL

005), gender (p < 0.001), colo-rectal surgery (p = < 0.001). QOL was significantly affected by FI (p < 0.001). Conclusion: In

our study population, nearly a quarter of patients reported FI. There was a significant correlation between FI and QOL. Therefore, enquiring about FI in IBD patients can lead to identification of this debilitating condition. This will enable early referral for continence care in IBD patients. Key Word(s): 1. Faecal incontinence; 2. Ulcerative colitis; 3. Quality of life; 4. IBD; Presenting Author: SILVIO MIHALJEVIC Additional Authors: ROBERT SMOLIC, MARIO STEFANIC, ZELJKO Ixazomib KRZNARIC, LJUBICA GLAVAS OBROVAC, BORIS TAKAC, ALEKSANDAR KIBEL Corresponding Author: ROBERT SMOLIC Affiliations: KBC Osijek; KBC Serine Protease inhibitor Zagreb; Medicinski Fakultet Osijek Objective: The Signal Transducers and Activators of Transcription (STATS) are intracellular effector molecules of cytokine-modulated

signalling, which play important role in the development of the human immune system and haematopoiesis, and are involved in the regulation of T-cell survival. STAT3, a master regulator of Th17 and FoxP3+Treg polarization, was recently associated with increased risk of ulcerative colitis (UC) and Chron’s disease (CD). Aim: To investigate whether a functional single nucleotide polymorphism (SNP) in the see more STAT3 gene is likely to be important for UC and CD risk in a Croatian population, and whether its phenotypic relationship could provide useful clinical predictions. Methods: A total of 50 CD patients and 91 UC patients, as well as 95 healthy control subjects were included

in the study. The intronic variant in the STAT3 gene (GenBank: NM 213662, rs744166) was genotyped using fluorescence resonance energy transfer technology and melting curve analysis of polymerase chain reaction products. Results: The observed population allele frequencies in the controls were similar to those reported in other Caucasian populations (36.8%, G allele). No significant difference was observed in genotype and allele frequencies between the cases and controls (CD: odds ratio 1.29, 95% confidence interval 0.78–2.11, P = 0.322; UC: 0.86 (0.56–1.32), P = 0.502, allelic contrasts, G allele). No further associations were uncovered by inspection of secondary traits. Conclusion: Here, we have demonstrated that the STAT3 rs744166 variant is not associated with CD, UC susceptibility or disease severity in the Croatian population, but pathogenetic mechanisms remain to be further evaluated. The STAT signalling pathway remains a potential therapeutic target for the development of new treatment options for UC and CD. Key Word(s): 1. Ulcerative colitis; 2. Chron’s disease (CD); 3. STAT 3 gene; 4.

Conclusion: Even though we did not have an established standard o

Conclusion: Even though we did not have an established standard of

the QOL in our society, this first study showed that the discovery of chronic viral hepatitis affects the quality of life of PLCVHB/C through: the fear of stigmatization, the economic precariousness; fear of contaminating; the and the side effects of treatment; the assumed restrictions in the life style. Key Word(s): 1. chronic hepatitis; 2. Quality of life; 3. Black africans; Presenting Author: FARHAD ZAMANI Additional Authors: MASOUDREZA SOHRABI, HOSSEIN AJDARKOSH, MITRA AMELI, GHOLAMREZA HEWMMASI Corresponding Author: FARHAD ZAMANI Affiliations: GILDRC; GILDRC; GILDRC; GILDRC; GILDRC Objective: Background: Viral hepatitis E is one of the main causes of endemic acute water born hepatitis. IWR1 see more Recently there have been increasing reports that hepatitis E virus may lead to chronic hepatitis as well as cirrhosis in immune compromised patients. To investigate the presence of HEV infection as a possible cause of cryptogenic cirrhosis, we conducted a cross-sectional study of undefined cirrhosis in Firoozgar hospital Methods: Method: Case –control study of patients with cryptogenic cirrhosis referred to Firoozgar hospital between 2009 and 2012. Fifty patients were enrolled in the study. Fifty healthy hospital staff members that met inclusion criteria were included as a control group.

All participants were screened for HEV-Ab and those positives were also tested HEV-RNA by PCR. Results: Result: The mean age of cases and control were 51.6 ± 5.7 and 41.89 ± 6.7 years, respectively; 54% (n = 27) cases selleck chemical and 27 (60%) control were

male. The presence of HEV-Ab among cases was 8% (n = 4) and zero in control. None of the HEV-Ab positive patients were positive for HEV-RNA. Presence of HEV –Ab was not associated with age, sex or histologic grade. Conclusion: Conclusion: To our knowledge this is the first study to implicate HEV in cryptogenic cirrhosis. The absence of HEV in patients who were HEV-Ab positive does not support HEV as an etiology of cryptogenic cirrhosis. There were no correlation between the presence of HEV-Ab and the compensation state of the patient. Key Word(s): 1. HEV; 2. CIRRHOSIS; 3. CRYPTOGEN; 4. Chronic hepatitis; Presenting Author: JAE HYUCK CHANG Additional Authors: TAE HO KIM, CHANG WHAN KIM, IN SEOK LEE, SOK WON HAN Corresponding Author: JAE HYUCK CHANG Affiliations: Bucheon St. Mary’s hospital; Seoul St. Mary’s hospital Objective: To investigate the time and extent of recovery of dilated common bile duct (CBD) after extraction of CBD stones and to identify factors related to long-term dilatation of the CBD. Methods: A total of 329 consecutive patients undergoing endoscopic extraction of CBD stones between January 2008 and December 2012 were recruited. After exclusion, 44 patients were analyzed retrospectively. Computed tomography or magnetic resonance retrograde cholangiopancreatography was used to measure CBD diameter.

Serum from HCC patients contained higher concentration TGF-β1 tha

Serum from HCC patients contained higher concentration TGF-β1 than those from cirrhosis and healthy control. Flow cytometry indicated that blocking TGF-β1 stimulated HCC cells proliferation and knockdown it leaded to G1 arrest. Colony formation assay displayed that silencing TGF-β1 affect proliferation of cancer cells. And animal experiments showed that interference TGF-β1 decreased the metastatic nodules in lungs.

Conclusion: Cancer secreted-TGF-β1 is necessary for proliferation of HCC cells. Knockdown Trichostatin A nmr TGF-β1 could inhibit tumor growth and decrease metastases. The findings suggest that TGF-β1 could be a potential therapeutic target for HCC treatment. Key Word(s): 1. HCC; 2. TGF-β1; 3. metastasis; Presenting Author: HIROKI UCHIDA Additional Authors: YUKIO IWASHITA, KIMINORI WATANABE, TAKAHIDE KAWASAKI, YUICHIRO KAWANO, YOKO KOMORI, KAZUHIRO YADA, MASAYUKI OHTA, SEIGO KITANO Corresponding Author: HIROKI UCHIDA Affiliations: Oita university Objective: Surgical resection for hepatocellular carcinoma (HCC) is regarded as a curable treatment. A tumor adhering to the major hepatic vessels sometimes causes a need to perform hepatectomy without surgical margin. The aim of this study was to evaluate the short-term

outcomes selleck chemical of hepatectomy with null surgical margin for HCC. Methods: rom January 2010 to December 2012, 70 patients who underwent curative hepatectomy for HCC in Oita University were analyzed. They were divided into two group with null margin group and negative margin group. These two groups were compared in terms of clinicopathological characteristics, perioperative features, and short-term outcomes. click here Results: Nineteen patients (27.1%) had been performed hepatectomy with null margin diagnosed pathologically. Mean intraoperative

blood loss was greater and operation time was longer in the null margin group as compared to those in the negative margin group. There were no significant differences in overall survival, disease free survival and other clinicopathological features between the two groups. In the null margin group, 12 patients had recurrence (59.1%) and the recurrence site was liver in all the patients. Four of the 12 patients (33%) had recurrence at the resected stump of the liver and the mean period of recurrence was 10.8 months. Conclusion: Hepatectomy with null surgical margin for HCC is technically demanding. It would lead to comparable and adequate surgical outcomes in patients with tumors in contact with major vessels, compared to hepatectomy with negative surgical margin. Key Word(s): 1. HCC; 2.

The SCR in Asians is lower than reported by clinical trials in et

The SCR in Asians is lower than reported by clinical trials in ethnically mixed populations. This is important information for Asian patients and supports that factors other than VR impact Asian SCR. Disclosures: The following people have nothing to disclose: Kahee Jo, Jennifer L. Dodge, Adrian Wadley, Adil E. Wakil, Jody L. Baron, Stewart Cooper Objective Acute-on-chronic liver failure (ACLF) caused by hepatitis B virus (HBV) is a severe disease with high mortality. Immune injury plays an important role during the early stage of the disease. Our research

aimed to investigate the safety and efficacy of dexamethasone therapy for patients with HBV related ACLF. Methods A total of 1 38 inpatients with the diagnosis for HBV induced ACLF were enrolled from January 2009 to December 2012. All the Paclitaxel chemical structure patients received the standard medicine treatment, among whom 35 cases underwent buy Navitoclax additional dexamethasone injection for 3 times (DMT Group). A total of 35 patients (SMT Group) matched for baseline characters served as controls. Both the groups were followed up for

12 weeks. The survival rates, liver functions and complications were recorded. Results The 12-week cumulative survival rates were 45.7%(16/35)and 54.3% (19/35) for SMT Group and DMT Group respectively, and no significant differences were found (P=0.654). There were no dramatic differences in the levels of alanine aminotransferase (ALT), albumin (ALB), total biliru-bin (TBil), international normalized ratio (INR), and Model for End-Stage selleck chemical Liver Disease score (MELD score) at 1, 2, 4, 8 and

12 weeks after enrollment between two groups. There were no significant differences in the incidence of complications (i.e., infection, gastrointestinal bleeding, encephalopathy, hepatore-nal syndrome, electrolyte disturbance and ascites) from 1-12 weeks between Group SMT and Group DMT. More than 40 ages, MELD score more than 28 and encephalopathy were independent risk factors for the mortality of patients. Conclusion Dexamethasone can not improve liver functions and 12-week survival rates of patients with HBV related ACLF. Age, MELD score and encephalopathy are independent risk factors. Key Words dexamethasone; acute-on-chronic; liver failure; hepatitis B; outcome Disclosures: The following people have nothing to disclose: Shaoquan Zhang, ZiYing Lei, Junfeng Chen, Bingliang Lin Although entecavir (ETV) and hepatitis B immunoglobulin (HBIG) have widely been used for prophylaxis of hepatitis B virus (HBV) recurrence following liver transplantation (LT), there have been few studies about clinical outcomes and risk factors of HBV recurrence. This study assessed clinical outcomes and identified risk factors of posttransplant HBV recurrence in patients who received prophylaxis with both ETV and HBIG after LT. We retrospectively analyzed the outcomes and risk factors of posttransplant HBV recurrence in the 155 patients who received prophylaxis with a combination of ETV and HBIG.

It has been found to be useful by several groups and its use is i

It has been found to be useful by several groups and its use is increasing but still confined mostly to research studies. It needs to become part of the annual assessment of PWH along with ABRs [42]. Similarly,

for radiological assessment of joints, the plain X-ray Pettersson score is being substituted by more sensitive techniques such as magnetic resonance imaging to pick up early joint damage. This is indeed now considered the gold standard [43]. However, the currently recommended protocol for data acquisition is very elaborate and could take 2–3 h for scanning alone for all six joints. This may even Hydroxychloroquine nmr require some children to be anaesthetized. These challenges along with its high cost have prevented its wide use in clinical care. To overcome

some of these issues, more recently ultrasound has been used to evaluate joints [44, 45]. This is more practical as it is much more accessible and can be easier to perform in children. Both these approaches MI-503 chemical structure need to be tested more widely to decide their final position in the clinical management of PWH. To evaluate the functional capacity of PWH, two instruments have been developed to assess activities. The first of these is the Hemophilia Activities List (HAL) – a self-administered questionnaire which assesses different domains of common activities [46]. A paediatric version has also been developed – the pedHAL [47]. These instruments have been found to be useful in

several studies in Western settings [48]. Its construct validity in other socioeconomic environments remains to be tested. Also, as this is a self-assessed questionnaire, it will need to be validated in different languages for different parts of the world. Another instrument for assessing activities is the Functional Independence Score in Haemophilia [49]. This is a performance-based tool related mainly to tasks of daily living assessed by simulating them in the clinic. While healthcare personnel need to be trained in its use, language-related issues for selleck chemical PWH are mostly avoided. This instrument has also been successfully used in several countries that do not have early replacement therapy [50-52] but has limited utility among those PWH who have minimal joint disease because of a ‘ceiling’ effect in them with almost all of them getting a maximum score. A more challenging version therefore needs to be developed. Tools to assess intensity and quantity of activities in haemophilia need to be defined. Apart from calculating energy requirements for different activities, accelerometers have also been used to actually document activities [53]. A good tool is also needed for the assessment of participation. Over the past decade, a lot of effort has been directed towards evaluating health-related quality of life (hrQOL) of PWH [54]. There have been several challenges with this approach.

It has been found to be useful by several groups and its use is i

It has been found to be useful by several groups and its use is increasing but still confined mostly to research studies. It needs to become part of the annual assessment of PWH along with ABRs [42]. Similarly,

for radiological assessment of joints, the plain X-ray Pettersson score is being substituted by more sensitive techniques such as magnetic resonance imaging to pick up early joint damage. This is indeed now considered the gold standard [43]. However, the currently recommended protocol for data acquisition is very elaborate and could take 2–3 h for scanning alone for all six joints. This may even Selisistat order require some children to be anaesthetized. These challenges along with its high cost have prevented its wide use in clinical care. To overcome

some of these issues, more recently ultrasound has been used to evaluate joints [44, 45]. This is more practical as it is much more accessible and can be easier to perform in children. Both these approaches PF-01367338 nmr need to be tested more widely to decide their final position in the clinical management of PWH. To evaluate the functional capacity of PWH, two instruments have been developed to assess activities. The first of these is the Hemophilia Activities List (HAL) – a self-administered questionnaire which assesses different domains of common activities [46]. A paediatric version has also been developed – the pedHAL [47]. These instruments have been found to be useful in

several studies in Western settings [48]. Its construct validity in other socioeconomic environments remains to be tested. Also, as this is a self-assessed questionnaire, it will need to be validated in different languages for different parts of the world. Another instrument for assessing activities is the Functional Independence Score in Haemophilia [49]. This is a performance-based tool related mainly to tasks of daily living assessed by simulating them in the clinic. While healthcare personnel need to be trained in its use, language-related issues for selleck chemicals PWH are mostly avoided. This instrument has also been successfully used in several countries that do not have early replacement therapy [50-52] but has limited utility among those PWH who have minimal joint disease because of a ‘ceiling’ effect in them with almost all of them getting a maximum score. A more challenging version therefore needs to be developed. Tools to assess intensity and quantity of activities in haemophilia need to be defined. Apart from calculating energy requirements for different activities, accelerometers have also been used to actually document activities [53]. A good tool is also needed for the assessment of participation. Over the past decade, a lot of effort has been directed towards evaluating health-related quality of life (hrQOL) of PWH [54]. There have been several challenges with this approach.

34 It is conceivable that adipose tissue capability to store trig

34 It is conceivable that adipose tissue capability to store triglycerides is much more reduced in subjects carrying the G allele compared to those who are C homozygous. Moreover, it has been demonstrated that during postabsorptive conditions, the major source of free fatty acids delivered to the liver is derived from free fatty acids released from subcutaneous adipose tissue, which enter the systemic circulation and are then transported to the liver by the hepatic artery and portal vein, after passage through splanchnic tissues.33 Thus, in the presence of smaller adipocytes in the subcutaneous

adipose tissue, we may have an overflow of free fatty acids to the liver in which they accumulate as triglycerides. Furthermore, subjects carrying the minor allele showed a significant reduced expression of SIRT1, a gene involved in lipolysis that could be both the result of the higher prevalence of small cells as well PD0332991 as a mechanism to compensate for the storage defect.35 Our data are in line with a recent report that investigated SIRT1-overexpressing mice, which had decreased nuclear factor κB activity, protecting them from lipid-induced hepatic

inflammation, glucose intolerance, and NAFLD.36 Not surprising was the significant reduced expression of LEP in subjects carrying the minor allele, given that their adipocyte size was decreased. It is well known that Trametinib adipocyte size positively correlates with secretion and messenger RNA expression of leptin.37 Although the expression

of PNPLA3 messenger RNA during the differentiation of white adipocytes and its response to classical regulatory hormones of lipid find more synthesis would suggest an important role of the protein in adipogenesis,17 it is known that the PNPLA3 gene product, adiponutrin, has a transacetylase activity, which catalyzes triglyceride synthesis in adipocytes,14 being up-regulated by insulin38 and refeeding.39 Our understanding of how this polymorphism might be linked to impaired subcutaneous adipocyte size is that this mutation may impair the lipogenic activity of the PNPLA3 gene product, adiponutrin, and/or impair the up-regulation of adiponutrin by insulin and food intake, which in obese subjects may lead the subcutaneous adipocytes to contain less triglycerides, being consequently smaller. On the other hand, it has to be taken into account that adipose cell size regulation is a complex trait depending on several molecules such as PNPLA2, a major lipolytic enzyme, which has been recently demonstrated to be a regulatory factor of lipid droplet size and, as a consequence, of adipose cell size.40 Other mechanisms by which variation in PNPLA3 affects liver triglyceride content have been hypothesized. Recent studies by Hobbs’s group41 would suggest that PNPLA3 is a lipid droplet protein that can catalyze hydrolysis of triglyceride in vitro.

19 Fetal gender was determined by PCR amplification of the Sry ge

19 Fetal gender was determined by PCR amplification of the Sry gene on the Y chromosome.20 Cells were initially grown in a 37°C, 5% CO2 humidified incubator in high glucose Dulbecco’s modified Eagle’s medium (DMEM) media (HyClone), containing 15% fetal bovine serum (FBS; HyClone) and antimicrobials (100 U/mL penicillin, 100 μg/mL streptomycin, and 0.25 μg/mL Amphotericin B; Cellgro). Fetal fibroblasts (1.0 × 106) were thawed and plated on a 100 mm collagen I-coated culture dish (Biocoat; BD BioSciences). Twenty-four hours later, cells were infected PF 01367338 with virus (200 μL, 3 × 1011 viral particles/mL). Twenty-two hours later, cells were trypsinized (0.05% Trypsin; HyClone) and

500-2,000 cells were transferred to 96-well collagen I-coated plates in media supplemented with 150 μg/mL G418. Ten to 12 days later, cells were again trypsinized and split three different ways. For future cell freezing, 20% of the cells were transferred to a 96-well collagen I-coated plate. For cell expansion and further molecular analyses, 20% of the cells were transferred to an additional 96-well collagen I-coated plate. For PCR screening, 60% of the cells were transferred to a 96-well PCR plate. Cells in the 96-well PCR plates were spun down and washed in 250 μL of phosphate-buffered saline (PBS).

The plates were spun again and the cell pellets resuspended in 5 μL lysis buffer (stock lysis solution = 660 μL 0.01% sodium dodecyl sulfate (SDS); 60 μL 10 mg/mL proteinase K; 30 μL 0.5M EDTA). Following a 90-minute incubation at 50°C and 30-minute denaturation at 95°C, 1 μL of the lysed cells were used for each 25 μL PCR reaction. Primer pairs MG2844/2821 learn more and APO866 order MG2824/2851 were used to detect targeted integration at the 5′ and 3′ ends, respectively. PCR conditions were as follows: 3 minutes at 98°C, 40 cycles

of 98°C for 10 seconds, 68°C for 20 seconds, and 72°C for 75 seconds, and then 72°C for 5 minutes. PCR generated products of 1622 bp and 1774 bp at the 5′ and 3′ ends, respectively, which were electrophoresed on a 2.0% TAE agarose gel and visualized with ethidium bromide staining. Following identification of double positive (5′ and 3′ PCR products) PCR clones, cells in the freezing-down 96-well plate were grown to 90% confluency and trypsinized with 30 μL 0.05% Trypsin. Fifteen μL of detached cells were placed into each of two cryovials (Nalgene) and 300 μL of freezing media (90% FBS; 10% dimethyl sulfoxide [DMSO]) was added to each cryovial. These vials were then transferred to an isopropanol cryofreezing container at −80°C. Sixteen hours later the vials were transferred to liquid nitrogen for storage. In order to increase the cell number to allow for sufficient DNA isolation for additional molecular analyses, clones in the 96-well expansion plate were grown to confluency and transferred to 24-well plates and subsequently expanded in 6-well and 100-mm collagen-coated dishes. DNA was purified using a standard salting out procedure as described.