The portion of the yolk sac that is derived from endoderm and lines the yolk sac. [ http://purl.obolibrary.org/obo/UBERON_cjm ]
This is just here as a test because I lose it
The portion of the yolk sac that is derived from endoderm and lines the yolk sac. [ http://purl.obolibrary.org/obo/UBERON_cjm ]