Assertion: echinoderm's cell | /r/HasProperty | located near embryonic blastopore
Facets:
Source sentences:
text: In protostomes, the mesoderm arises from cells located near the embryonic blastopore, and a splitting occurs that produces the coelom, called a schizocoelom.
text: In protostomes the mesoderm arises from cells located near the embryonic blastopore and splits to form the coelom.