Germinal-cell loss in normal metazoan spermatogenesis.
D000818:Animals; D000845:Annelida; D002455:Cell Division; D002869:Chromosome Aberrations; D025063:Chromosome Disorders; D004330:Drosophila; D005854:Germ Cells; D006376:Helminths; D007313:Insecta; D008297:Male; D008540:Meiosis; D008938:Mitosis; D011110:Polymorphism, Genetic; D051381:Rats; D012454:Salamandra; D012908:Snails; D012911:Snakes; D013091:Spermatogenesis