Fig. 1

Vitexin reduces viability in A549 cells. a The chemical structure of vitexin. b The viability of A549 cells following 48 h of vitexin treatment was detected by MTT assay. c The viability of 16HBE cells following 48 h of vitexin treatment was detected by MTT assay. d The cellular injury of A549 cells following 48 h of vitexin treatment was detected by LDH release assay. *P < 0.05 versus vehicle-treated cells