Fig. 2

Vitexin induces apoptosis in A549 cells. a The apoptosis of A549 cells following 48 h of vitexin treatment was detected by Annexin V-FITC/PI double staining. b The expression levels of apoptotic-related proteins in A549 cells following 48 h of vitexin treatment were detected by western blot analysis. *P < 0.05 versus vehicle-treated cells