I have selected for study specialized regions of cells that include the axopods of protozoa, the brush border of microvilli of intestinal epithelial cells, the acrosomal process of invertebrate sperm, ...
it may be a sperm coating protein from the epididymis Anti-GP20 antibody could block sperm penetration of zona-free hamster oocytes [15] SP-10 A sperm intra-acrosomal protein A mAb to SP-10 ...