title: The germinal cells in the testes of men with altered spermatogenesis.
mesh_terms: D006801:Humans; D007248:Infertility, Male / Q000473:pathology*; D008297:Male; D008854:Microscopy, Electron; D013094:Spermatozoa / Q000648:ultrastructure*; D013737:Testis / Q000473:pathology*