title: The ratios and separation of X and Y spermatozoa in human semen.
mesh_terms: D002498:Centrifugation; D003584:Cytological Techniques; D005471:Fluoroscopy; D006112:Gravitation; D006801:Humans; D008297:Male; D008856:Microscopy, Fluorescence; D011796:Quinacrine; D012661:Semen; D012730:Sex Chromosomes; D013094:Spermatozoa; D013194:Staining and Labeling
chemical_list: D011796:Quinacrine