Skip to main content
. 2015 Apr 30;21:86–95. doi: 10.12659/MSMBR.893608

Figure 4.

Figure 4

Apoptotic activity by flow cytometry. (A) Flow cytometric analysis of apoptosis. (B) Percentages of apoptotic cells before and after UVB irradiation. With no irradiation, both p21 overexpression (p21+) and p21 silencing (p21–) had a pro-apoptotic effect, but p21 silencing showed a more profound pro-apoptotic effect than p21 overexpression. After UVB irradiation, apoptosis increased in all irradiated groups. In contrast to non-irradiated p21-overexpressing (p21+) cells, p21 overexpression in irradiated p21-overexpressing (UVB-p21+) cells displayed an anti-apoptotic effect. * p<0.05 vs. CON, # p<0.05 vs. p21+, @ p<0.05 vs. p21–, & p<0.05 vs. UVB-CON.