Cylindrical bodies derived from endoplasmic reticulum in Leydig's cell of the rat testis.
D000818:Animals; D003593:Cytoplasm; D004721:Endoplasmic Reticulum; D002479:Inclusion Bodies; D007985:Leydig Cells; D008264:Macrophages; D008297:Male; D008854:Microscopy, Electron; D051381:Rats; D011919:Rats, Inbred Strains; D013733:Testicular Diseases / Q000473:pathology*; D013737:Testis / Q000473:pathology*