The mating game: what happens when sperm meets egg.
D000818:Animals; D003269:Contraception, Immunologic; D005260:Female; D005306:Fertilization; D006023:Glycoproteins / Q000502:physiology; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008297:Male; D008322:Mammals; D012617:Sea Urchins; D013084:Sperm-Ovum Interactions
D006023:Glycoproteins