title: Ultrastructure of spermatozoa of the wooly opossum Caluromys philander.
mesh_terms: D000818:Animals; D003593:Cytoplasm; D008297:Male; D008854:Microscopy, Electron; D008928:Mitochondria; D009893:Opossums; D013094:Spermatozoa / Q000166:cytology*