title: Unusual ultrastructural features of chromatin in mouse sperm cells after DNA staining with osmium ammines.
mesh_terms: D000818:Animals; D002843:Chromatin / Q000648:ultrastructure*; D004247:DNA; D006651:Histocytochemistry; D008297:Male; D051379:Mice; D008854:Microscopy, Electron; D009992:Osmium; D011479:Protamines; D013094:Spermatozoa / Q000648:ultrastructure*; D013194:Staining and Labeling
chemical_list: D002843:Chromatin; D011479:Protamines; D009992:Osmium; D004247:DNA