Stereological analysis of Leydig cells in normal guinea pig testis.
D000818:Animals; D002462:Cell Membrane / Q000648:ultrastructure; D002467:Cell Nucleus / Q000648:ultrastructure; D004721:Endoplasmic Reticulum / Q000648:ultrastructure; D006168:Guinea Pigs; D007985:Leydig Cells / Q000648:ultrastructure*; D008297:Male; D008928:Mitochondria / Q000648:ultrastructure; D013737:Testis / Q000648:ultrastructure*