The ultrastructure of four types of human spermatogonia.
D000328:Adult; D002466:Cell Nucleolus; D002467:Cell Nucleus; D004721:Endoplasmic Reticulum; D006003:Glycogen / Q000032:analysis; D006801:Humans; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged; D008928:Mitochondria; D013094:Spermatozoa / Q000032:analysis / Q000166:cytology*
D006003:Glycogen