Assertion: amnion's cell | /r/CapableOf | make the floor
Facets:
Source sentences:
text: This shell creates the "roof" of the intervillus space with syncytiotrophoblast making contact with the maternal epithelium, a cytotrophoblastic shell will be created, making the roof of the space with the syncytiotrophoblast cells making the floor and the tertiary villi columns inside it.