Figure 2
From: EMAP/EMAPA ontology of mouse developmental anatomy: 2013 update
EMAP and EMAPA ontologies provide stage-specific and stage-independent representations of mouse embryo anatomy. Originally constructed as uniparental partonomic hierarchies with anatomic entities for each Theiler stage of embryonic development, the anatomy ontology for mouse development has been revised and is now comprised of directed acyclic graphs (DAGs) with both stage-independent and stage-specific representation for mouse developmental anatomy.