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(A) Gene expression analysis of markers of differentiation after SIP1 knockdown at Stg1. Wnt1, Lmx1a, and TH were down-regulated at the end of stage 4 while nestin and β-III tub show no significant changes (unpaired t test): *P < 0.05. (B) Western blot detection of similar cleaved Caspase3 expression in SIP1 knockdown samples as vector control.
