A 83-01
Chemical Name: 3-(6-Methyl-2-pyridinyl)-N-phenyl-4-(4-quinolinyl)-1H-pyrazole-1-carbothioamide
Purity: ≥98%
Biological Activity
A 83-01 is a potent inhibitor of TGF-β type I receptor ALK5 kinase, type I activin/nodal receptor ALK4 and type I nodal receptor ALK7 (IC50 values are 12, 45 and 7.5 nM respectively). A 83-01 blocks phosphorylation of Smad2 and inhibits TGF-β-induced epithelial-to-mesenchymal transition. Only weakly inhibits ALK-1, -2, -3, -6 and MAPK activity. More potent than SB 431542 (Cat. No. 1614). A 83-01 inhibits differentiation of rat induced pluripotent stem cells (riPSCs) and increases clonal expansion efficiency. Helps maintain homogeneity and long-term in vitro self-renewal of human iPSCs. Also promotes neural differentiation of hPSCs as part of a chemical cocktail.A 83-01 synthesized to Ancillary Material Grade also available.
For more information about how A 83-01 may be used, see our protocol: Converting Fibroblasts into Cardiomyocytes (9C Cocktail)
Technical Data
The technical data provided above is for guidance only.
For batch specific data refer to the Certificate of Analysis.
Tocris products are intended for laboratory research use only, unless stated otherwise.
Background References
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Organoid Models of Human and Mouse Ductal Pancreatic Cancer.
Boj SF, Hwang C, Baker LA et al.
Cell. -
3D mouse embryonic stem cell culture for generating inner ear organoids.
Koehler KR, Hashino E.
Nat Protoc -
The ALK5 inhibitor A-83-01 inhibits smad signaling and epithelial-to-mesenchymal transition by transforming growth factor-β.
Tojo et al.
Cancer.Sci., 2005;96:791 -
Generation of rat and human induced pluripotent stem cells by combining genetic reprogramming and chemical inhibitors.
Li et al.
Cell Stem Cell, 2009;4:16 -
In vitro expansion of human gastric epithelial stem cells and their responses to bacterial infection.
Bartfeld et al.
Gastroenterology, 2015;148:126 -
Generation of Cerebral Organoids from Human Pluripotent Stem Cells
Lancaster et al.
Nat.Protoc., 2015;9:2329 -
Isolation and in vitro expansion of human colonic stem cells.
Jung et al.
Nat.Med., 2011;17:1225 -
Identification of multipotent luminal progenitor cells in human prostate organoid cultures.
Karthaus et al.
Cell, 2014;159:163 -
SnapShot: Growing Organoids from Stem Cells.
Sato et al.
Cell, 2015;161:1700 -
Establishment of gastrointestinal epithelial organoids
Mahe et al.
Curr.Protoc. Mouse Biol., 2014;3:217 -
Chemically defined neural conversion of human pluripotent stem cells.
Chen et al.
Methods Mol.Biol., 2019;1919:59
Product Datasheets
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Citations for A 83-01
The citations listed below are publications that use Tocris products. Selected citations for A 83-01 include:
84 Citations: Showing 1 - 10
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ERdj5 protects goblet cells from endoplasmic reticulum stress-mediated apoptosis under inflammatory conditions
Authors: Jeong Et al.
Exp Mol Med 2023;
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FOXA2 drives lineage plasticity and KIT pathway activation in neuroendocrine prostate cancer.
Authors: Han Et al.
Cancer Cell 2022;40:1306
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Optimized human intestinal organoid model reveals interleukin-22-dependency of paneth cell formation.
Authors: He Et al.
Cell Stem Cell 2022;29:1333
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An airway organoid-based screen identifies a role for the HIF1α-glycolysis axis in SARS-CoV-2 infection.
Authors: Duan Et al.
Cell Rep. 2021;37:109920
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Global phosphoproteomics reveal CDK suppression as a vulnerability to KRas addiction in pancreatic cancer.
Authors: Kazi Et al.
Clin Cancer Res 2021;27:4012
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A versatile polypharmacology platform promotes cytoprotection and viability of human pluripotent and differentiated cells.
Authors: Chen Et al.
Nat.Methods 2021;18:528
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Microenvironment drives cell state, plasticity, and drug response in pancreatic cancer.
Authors: Raghavan Et al.
Cell 2021;184:6119
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Robotic high-throughput biomanufacturing and functional differentiation of human pluripotent stem cells.
Authors: Tristan Et al.
Stem Cell Rep 2021;16:3076
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Critical Role of Type III Interferon in Controlling SARS-CoV-2 Infection in Human Intestinal Epithelial Cells
Authors: Stanifer Et al.
Cell Rep 2020;32:107863
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Snake venom gland organoids.
Authors: Post Et al.
Cell 2020;180:233
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Immunoevolution of mouse pancreatic organoid isografts from preinvasive to metastatic disease.
Authors: Filippini Et al.
Sci Rep 2019;9:12286
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Evaluating Shigella flexneri Pathogenesis in the Human Enteroid Model.
Authors: Ranganathan Et al.
Infect Immun 2019;87
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Sera Antibody Repertoire Analyses Reveal Mechanisms of Broad and Pandemic Strain Neutralizing Responses after Human Norovirus Vaccination.
Authors: Lindesmith Et al.
Immunity 2019;50:1530
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Expansion of Luminal Progenitor Cells in the Aging Mouse and Human Prostate.
Authors: Crowell Et al.
Cell Rep 2019;28:1499
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Establishment of Patient-Derived Organoids and Drug Screening for Biliary Tract Carcinoma.
Authors: Saito Et al.
Cell Rep 2019;27:1265
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Rectal Organoids Enable Personalized Treatment of Cystic Fibrosis.
Authors: Berkers Et al.
Cell Rep 2019;26:1701
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Establishment and Morphological Characterization of Patient-Derived Organoids from Breast Cancer.
Authors: Mazzucchelli Et al.
Biol Proced Online 2019;21:12
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Conserved regulation of RNA processing in somatic cell reprogramming.
Authors: Kanitz Et al.
BMC Genomics 2019;20:100
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Development of Collagen-Based 3D Matrix for Gastrointestinal Tract-Derived Organoid Culture.
Authors: Jee Et al.
Stem Cells Int 2019;2019:8472712
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Folding-function relationship of the most common cystic fibrosis-causing CFTR conductance mutants.
Authors: Willigen Et al.
Life Sci Alliance 2019;2
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Chemically Defined Neural Conversion of Human Pluripotent Stem Cells
Authors: Chen Et al.
Methods Mol.Biol. 2019;1919:59
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Capacitation of human na�ve pluripotent stem cells for multi-lineage differentiation.
Authors: Rostovskaya Et al.
Development 2019;146
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Activin Is Superior to BMP7 for Efficient Maintenance of Human iPSC-Derived Nephron Progenitors.
Authors: Tanigawa Et al.
Stem Cell Reports 2019;13:322
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Activating a Reserve Neural Stem Cell Population In Vitro Enables Engraftment and Multipotency after Transplantation.
Authors: Peterson Et al.
Stem Cell Reports 2019;12:680
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Role of cyclooxygenase-2-mediated prostaglandin E2-prostaglandin E receptor 4 signaling in cardiac reprogramming.
Authors: Muraoka Et al.
Nat Commun 2019;10:674
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Human Intestinal Enteroids Model MHC-II in the Gut Epithelium.
Authors: Wosen Et al.
Front Immunol 2019;10:1970
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LRH-1 mitigates intestinal inflammatory disease by maintaining epithelial homeostasis and cell survival.
Authors: Bayrer Et al.
Nat Commun 2018;9:4055
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A stably self-renewing adult blood-derived induced neural stem cell exhibiting patternability and epigenetic rejuvenation.
Authors: Sheng Et al.
Nat Commun 2018;9:4047
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Morphological alterations of cultured human colorectal matched tumour and healthy organoids.
Authors: Kashfi Et al.
Oncotarget 2018;9:10572
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Expansion of Airway Basal Cells and Generation of Polarized Epithelium.
Authors: Levardon Et al.
Bio Protoc 2018;8
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COX-2-PGE2 Signaling Impairs Intestinal Epithelial Regeneration and Associates with TNF Inhibitor Responsiveness in Ulcerative Colitis.
Authors: Li Et al.
EBioMedicine 2018;36:497
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Development and Characterization of Human Cerebral Organoids: An Optimized Protocol.
Authors: Yakoub and Sadek
Cell Transplant 2018;27:393
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Single-Cell Analysis Identifies LY6D as a Marker Linking Castration-Resistant Prostate Luminal Cells to Prostate Progenitors and Cancer.
Authors: Barros-Silva Et al.
Cell Rep 2018;25:3504
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Super-Obese Patient-Derived iPSC Hypothalamic Neurons Exhibit Obesogenic Signatures and Hormone Responses.
Authors: Rajamani Et al.
Cell Stem Cell 2018;22:698
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Myoepithelial Cells of Submucosal Glands Can Function as Reserve Stem Cells to Regenerate Airways after Injury.
Authors: Tata Et al.
Cell Stem Cell 2018;22:668
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Submucosal Gland Myoepithelial Cells Are Reserve Stem Cells That Can Regenerate Mouse Tracheal Epithelium.
Authors: Lynch Et al.
Cell Stem Cell 2018;22:653
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CRISPR-based chromatin remodeling of the endogenous Oct4 or Sox2 locus enables reprogramming to pluripotency.
Authors: Liu Et al.
Cell Stem Cell. 2018;22:252
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Inflammatory Cytokine TNFα Promotes the Long-Term Expansion of Primary Hepatocytes in 3D Culture.
Authors: Peng Et al.
Cell 2018;175:1607
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Colon organoid formation and cryptogenesis are stimulated by growth factors secreted from myofibroblasts.
Authors: Yip Et al.
PLoS One 2018;13:e0199412
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Colonoscopy-based colorectal cancer modeling in mice with CRISPR-Cas9 genome editing and organoid transplantation.
Authors: Roper Et al.
Nat Protoc 2018;13:217
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IL-1-induced JAK/STAT signaling is antagonized by TGF-beta to shape CAF heterogeneity in pancreatic ductal adenocarcinoma.
Authors: Biffi Et al.
Cancer Discov 2018;
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NODAL Secures Pluripotency upon Embryonic Stem Cell Progression from the Ground State.
Authors: Mulas Et al.
Stem Cell Reports 2017;9:77
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Enhanced Development of Skeletal Myotubes from Porcine Induced Pluripotent Stem Cells.
Authors: Genovese
Sci Rep 2017;7:41833
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Zfp281 is essential for mouse epiblast maturation through transcriptional and epigenetic control of Nodal signaling.
Authors: Huang Et al.
Elife 2017;6
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Organoid culture of human prostate cancer cell lines LNCaP and C4-2B.
Authors: Ma Et al.
Am J Clin Exp Urol 2017;5:25
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Establishment of mouse expanded potential stem cells.
Authors: Yang Et al.
Nature 2017;550:393
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In vivo genome editing and organoid transplantation models of colorectal cancer and metastasis.
Authors: Roper Et al.
Nat Biotechnol 2017;35:569
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Induced Pluripotent Stem Cell-Derived Dopaminergic Neurons from Adult Common Marmoset Fibroblasts.
Authors: Vermilyea Et al.
Stem Cells Dev 2017;26:1225
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Constitutively Active SMAD2/3 Are Broad-Scope Potentiators of Transcription-Factor-Mediated Cellular Reprogramming.
Authors: Ruetz Et al.
Cell Stem Cell 2017;21:791
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Enhancer Reprogramming Promotes Pancreatic Cancer Metastasis.
Authors: Roe Et al.
Cell 2017;170:875
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Epigenetic resetting of human pluripotency.
Authors: Guo Et al.
Development 2017;144:2748
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Immunopathology of childhood celiac disease-Key role of intestinal epithelial cells.
Authors: Pietz Et al.
PLoS One 2017;12:e0185025
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Anti-tumor activity of SL4 against breast cancer cells: induction of G2/M arrest through modulation of the MAPK-dependent p21 signaling pathway.
Authors: Wang Et al.
Sci Rep 2016;6:36486
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Angiopoietin-like 4 promotes angiogenesis in the tendon and is increased in cyclically loaded tendon fibroblasts.
Authors: Mousavizadeh Et al.
J Physiol 2016;594:2971
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Dual SMAD Signaling Inhibition Enables Long-Term Expansion of Diverse Epithelial Basal Cells
Authors: Mou Et al.
Cell: Stem Cell 2016;19:217
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Pharmacological reprogramming of fibroblasts into neural stem cells by signaling-directed transcriptional activation.
Authors: Zhang Et al.
Cell Stem Cell 2016;18(653)
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Human Enteroids as a Model of Upper Small Intestinal Ion Transport Physiology and Pathophysiology.
Authors: Foulke-Abel Et al.
Nat Protoc 2016;150:638
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Inhibition of TGFβ cell signaling for limbal explant culture in serumless, defined xeno-free conditions.
Authors: Zamudio Et al.
Exp Eye Res 2016;145:48
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Organoid culture systems for prostate epithelial and cancer tissue.
Authors: Drost Et al.
Proc Natl Acad Sci U S A 2016;11:347
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High-efficiency reprogramming of fibroblasts into cardiomyocytes requires suppression of pro-fibrotic signalling.
Authors: Zhao Et al.
Nat Commun 2015;6:8243
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Amnion cell mediated immune modulation following bleo. challenge: controlling the regulatory T cell response.
Authors: Tan Et al.
Stem Cell Res Ther 2015;6:8
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Disease Modeling and Gene Therapy of Copper Storage Disease in Canine Hepatic Organoids.
Authors: Nantasanti Et al.
Stem Cell Res 2015;5:895
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CPM Is a Useful Cell Surface Marker to Isolate Expandable Bi-Potential Liver Progenitor Cells Derived from Human iPS Cells.
Authors: Kido Et al.
Inflamm Bowel Dis 2015;5:508
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Transcription factor binding dynamics during human ES cell differentiation.
Authors: Tsankov Et al.
Stem Cell Reports 2015;518:344
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Targeted disruption of DNMT1, DNMT3A and DNMT3B in human embryonic stem cells.
Authors: Liao Et al.
Cell 2015;47:469
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TGFβ loss activates ADAMTS-1-mediated EGF-dependent invasion in a model of esophageal cell invasion.
Authors: Bras Et al.
Nat Genet 2015;330:29
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HD iPSC-derived neural progenitors accumulate in culture and are susceptible to BDNF withdrawal due to glutamate toxicity.
Authors: Mattis Et al.
Exp Cell Res 2015;24:3257
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Microbial Disruption of Autophagy Alters Expression of the RISC Component AGO2, a Critical Regulator of the miRNA Silencing Pathway.
Authors: Sibony Et al.
Proc Natl Acad Sci U S A 2015;21:2778
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Maintenance and neuronal differentiation of chicken induced pluripotent stem-like cells.
Authors: Dai Et al.
Stem Cells Int 2015;2014:182737
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Organoid models of human and mouse ductal pancreatic cancer.
Authors: Boj Et al.
Cell 2015;160:324
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Long-term culture of genome-stable bipotent stem cells from adult human liver.
Authors: Huch Et al.
Nature 2015;160:299
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Heightened potency of human pluripotent stem cell lines created by transient BMP4 exposure.
Authors: Yang Et al.
Stem Cell Reports 2015;112:E2337
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Preserved genetic diversity in organoids cultured from biopsies of human colorectal cancer metastases.
Authors: Weeber Et al.
Hum Mol Genet 2015;112:13308
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PMA induces SnoN proteolysis and CD61 expression through an autocrine mechanism.
Authors: Li Et al.
Cell Signal 2014;26:1369
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β-Cell differentiation of human pancreatic duct-derived cells after in vitro expansion.
Authors: Corritore Et al.
Cell Cycle 2014;16:456
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Mechanism-based corrector combination restores δF508-CFTR folding and function.
Authors: Okiyoneda Et al.
Nat Chem Biol 2013;9:444
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Generation of BAC transgenic epithelial organoids.
Authors: Schwank Et al.
Cell Reprogram 2013;8:e76871
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An in vitro expansion system for generation of human iPS cell-derived hepatic progenitor-like cells exhibiting a bipotent differentiation potential.
Authors: Yanagida Et al.
PLoS One 2013;8:e67541
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High-resolution analysis with novel cell-surface markers identifies routes to iPS cells.
Authors: O'Malley Et al.
Nature 2013;499:88
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Immunosurveillance against tetraploidization-induced colon tumorigenesis.
Authors: Boilàve Et al.
Proc Natl Acad Sci U S A 2013;12:473
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Generation of organized anterior foregut epithelia from pluripotent stem cells using small molecules.
Authors: Kearns Et al.
PLoS One 2013;11:1003
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Differential regulation of Smad3 and of the type II transforming growth factor-β receptor in mitosis: implications for signaling.
Authors: Hirschhorn Et al.
PLoS One 2012;7:e43459
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Porcine induced pluripotent stem cells analogous to naïve and primed embryonic stem cells of the mouse.
Authors: Telugu Et al.
Int J Dev Biol 2011;54:1703
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Generation of genetically modified rats from embryonic stem cells.
Authors: Kawamata and Ochiya
Nature 2010;107:14223
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