Figure 3From: Cip/Kip cyclin-dependent protein kinase inhibitors and the road to polyploidyFluorescence activated cell sorting (FACS) analysis of mouse trophoblast stem (TS) cells undergoing mitotic cell cycles or endoreduplication as they differentiate into trophoblast giant (TG) cells when deprived of FGF4. p57-/- TS cells respond to the same conditions by forming multinucleated TG cells. Data are from [18].Back to article page