Endocrine aspects of ageing in the guppy, Lebistes reticulatus (Peters). 3. The testis.
D000375:Aging; D000818:Animals; D003239:Connective Tissue Cells; D005399:Fishes / Q000254:growth & development*; D008297:Male; D013094:Spermatozoa; D013737:Testis / Q000166:cytology / Q000254:growth & development*