title: Biochemistry of spermatogenesis. Introduction.
mesh_terms: D000818:Animals; D001669:Biochemical Phenomena; D001671:Biochemistry; D002454:Cell Differentiation; D007315:Insemination, Artificial; D008297:Male; D013045:Species Specificity; D013081:Sperm Motility; D013091:Spermatogenesis; D013094:Spermatozoa / Q000166:cytology / Q000201:enzymology