The Mouse Adult Gross Anatomy Ontology and Mammalian Phenotype Ontology are downloaded weekly from the Mouse Genome Informatics databases at Jackson Laboratories (ftp://ftp.informatics.jax.org/pub/reports/index.html). For more information about these ontologies, see the MGI Publications Page at http://www.informatics.jax.org/mgihome/other/publications.shtml.
altered ability of the Sertoli cells to endocytose and degrade the apoptotic spermatogenic cells and residual bodies (shed cytoplasts) during the maturation phase of spermiogenesis; normally, greater than 50 per cent of differentiating spermatogenic cells undergo apoptosis before maturing into spermatozoa, and these cells are selectively and rapidly eliminated through phagocytosis by Sertoli cells