Figure 1From: Removal of spermatozoa with externalized phosphatidylserine from sperm preparation in human assisted medical procreation: effects on viability, motility and mitochondrial membrane potentialLocalization of PS on human spermatozoa. PS are visualized by labeling spermatozoa with annexin V-FITC staining. (A) A spermatozoa as seen under bright field microscopy. (B-F) Representative patterns of annexin V-FITC binding sites: head (B), midpiece (C), head plus midpiece (D), tail (E), or entire spermatozoon (F) plasma membrane as seen under fluorescence microscopy. Magnification ×900.Back to article page