Fig. 1From: Gel electrophoresis of human sperm: a simple method for evaluating sperm protein qualityMembrane protein bands from human sperm extracts. Fifteen μg of proteins extracted from individual samples were loaded in each lane, separated on a 4–12% polyacrylamide gel, and stained with Coomassie Blue. Lanes: M: molecular mass markers; 1–11: 11 representative human sperm extractsBack to article page