Abstract
With their unique capabilities of self-renewal and differentiation into three germ layers, mouse embryonic stem cells (mESCs) are widely used as an in vitro cellular model for early mammalian developmental studies. mESCs are traditionally cultured in high-serum and LIF-containing medium on a growth-deficient mouse embryonic fibroblast layer. A more recent culturing system with two inhibitors (for GSK3β (CHIR99021) and MEK1/2 (PD0325901)) and LIF enables the derivation of mESC lines from various mouse strains. Here we describe methods for the mESC growth and maintenance in each medium composition as well as their adaptation to either condition.
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