Assertion: epithelium's surface | /r/HasAspect | strong positiveaffinity
Facets:
value: for the mesoderm
type: TRANSITIVE-OBJECT
Source sentences:
text: The position of the ectoderm relative to the other germ layers of the embryo is governed by "selective affinity", meaning that the inner surface of the ectoderm has a strong (positive) affinity for the mesoderm, and a weak (negative) affinity for the endoderm layer.