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Fig. 2. Kinetics of expression of pluripotency genes during differentiation of
cESC. Proliferating cESC were induced to differentiate (A) by
retinoic acid treatment at 10-7 M for 5 days after plating or
(D,E) by embryoid body formation for 4 days. Five independent
experiments provided similar results. (B,C) As in A except that
cycloheximide (B) or actinomycin D (C) was added to the culture medium at 10
µg/ml at T=0; two independent experiments provided similar results.
Expression of some of the genes analysed, as measured by real-time RT-PCR, was
downregulated (D) or upregulated (E). A value of 1 was assigned to expression
levels at T=0, i.e. at the start of the induction of differentiation.