title: Gustaf Retzius and spermatology.
authors.affiliation: Department of Ultrastructure Research, The Wenner-Gren Institute, Stockholm University, Sweden.
authors.forename: B A
authors.initials: BA
authors.lastname: Afzelius
mesh_terms: D000349:Africa; D000818:Animals; D000835:Animals, Wild; D001695:Biology / Q000266:history*; D005306:Fertilization; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008297:Male; D051379:Mice; D010802:Phylogeny; D011323:Primates; D013077:Sperm Head / Q000648:ultrastructure; D013094:Spermatozoa / Q000166:cytology* / Q000502:physiology*; D013548:Sweden