in the current study , the effects of cell number and population density on drug-induced conversion of bewo cells from the cytotrophoblastlike to the syncytiotrophoblastlike phenotype were investigated using as markers of differentiation formation of `` '' giant '' '' cells , a process shown to require exogenous purines , and expression of placental ( heat-stable ) alkaline phosphatase .
C0007634
cells
C0007589
differentiation