Ontology describing the anatomy of Danio rerio from a single cell to adult fish. The namespace of the ontology is zebrafish_anatomical_ontology the prefix is ZFA. Updates to ZFA are released every other month. A subset of the ZFS http://purl.obolibrary.org/obo/zfs.obo is packaged with this ontology.
spermatid come before sperm and after spermatocyte. ZDB-PUB-130904-24. spermatid needed for annotation.
Original comment by: ybradford