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<p>(LIF) in serum media. A drug cocktail containing inhibitors to <a href="page.php?w=Glycogen_synthase_kinase-3_beta">GSK3B</a> and the <a href="page.php?w=MAPK%2FERK_pathway">MAPK/ERK pathway</a>, called 2i, has also been shown to maintain pluripotency in stem cell culture. Human ESCs are grown on a feeder layer of mouse embryonic <a href="page.php?w=fibroblasts">fibroblasts</a> and require the presence of basic fibroblast growth factor (bFGF or FGF-2). Without optimal culture conditions or genetic manipulation, embryonic stem cells will rapidly</p><p>
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