Fluorescence analysis of apoptosis/necrosis in MDA-MB-231 cells treated with IC50 CK concentrations (BF, Bright field; Apopxin Green, cells undergoing apoptosis show green fluorescence; 7-AAD, cells undergoing necrosis show red fluorescence; BF+ Apopxin Green+7-AAD, the photos of the above three conditions were merged) (400×).