Genetic differences in the structure of the mouse testes.
D000818:Animals; D003433:Crosses, Genetic; D005298:Fertility; D005823:Genetics; D006823:Hybrid Vigor; D006824:Hybridization, Genetic; D008297:Male; D051379:Mice; D008815:Mice, Inbred Strains; D008854:Microscopy, Electron; D013737:Testis / Q000166:cytology / Q000473:pathology*