Figure 2. Combination of estradiol (E2, 10-10 M) and progesterone (P, 10-8 M) in cell proliferation effects. A, Cell viability in each group was monitored over five continuous days. B, Colony formation ability in each group of cells stained with crystal violet (upper panel) and counted (lower panel). Data are reported as means±SD. *P<0.05; **P<0.01 vs DMSO group (control) (Student’s t-test).
