CDKN1B and acute myeloid leukemia: PLSCR1 silencing by siRNA in primary AML cells led to almost complete abrogation of wogonoside-induced myeloid differentiation, p27Kip1/p21Cip1 upregulation and c-Myc downregulation, indicating that wogonoside-induced effects on p27Kip1, p21Cip1 and c-Myc probably are mediated by PLSCR1.