title: A simple staining method for the morphologic classification of spermatozoa.
mesh_terms: D006801:Humans; D008297:Male; D008751:Methylene Blue; D012394:Rosaniline Dyes; D013094:Spermatozoa / Q000145:classification*; D013194:Staining and Labeling
chemical_list: D012394:Rosaniline Dyes; D008751:Methylene Blue