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.
change in the timing or the number of cardiac muscle cells undergoing programmed cell death
Comment:
Note that this is a generic term that applies to cardiomyocytes irrespective of the life stage of the organism, that is, regardless of whether cardiac muscle cells are still in the process of differentiation or terminally differentiated.