Ultrastructural studies of spontaneous spermiation in the guinea pig.
D000818:Animals; D003593:Cytoplasm; D004721:Endoplasmic Reticulum; D006168:Guinea Pigs; D008297:Male; D008854:Microscopy, Electron; D012708:Sertoli Cells / Q000166:cytology*; D013094:Spermatozoa / Q000254:growth & development*; D013194:Staining and Labeling; D013737:Testis / Q000166:cytology*