Uberon definition : extraembryonic tissue membrane, formed from the visceral endoderm and the extraembryonic
mesoderm, which is located ventral to the embryonic disc and is connected to the presumptive
midgut of the embryo; the yolk that it contains is the site of embryonic hematopoiesis
and vitelline circulation is involved in early embryonic circulation; it is the origin
of the primordial germ cells;
extraembryonic tissue membrane, formed from the visceral endoderm and the extraembryonic
mesoderm, which is located ventral to the embryonic disc and is connected to the presumptive
midgut of the embryo; the yolk that it contains is the site of embryonic hematopoiesis
and vitelline circulation is involved in early embryonic circulation; it is the origin
of the primordial germ cells