Assertion: nervous system's cell | /r/CapableOf | form a layer of mesoderm
Facets:
value: between the endoderm
type: LOCATION
value: between the ectoderm
type: LOCATION
Source sentences:
text: At the onset of gastrulation presumptive mesodermal cells move through the dorsal blastopore lip and form a layer of mesoderm in between the endoderm and the ectoderm.