Electron microscopy of the developing sperm-head in the sparrow testis.
D000818:Animals; D004583:Electrons; D006801:Humans; D008297:Male; D008853:Microscopy; D008854:Microscopy, Electron; D012661:Semen; D046370:Sparrows; D013077:Sperm Head; D013094:Spermatozoa; D013737:Testis
MICROSCOPY, ELECTRON; SEMEN