Assertion: neuroepithelium's cell | /r/CapableOf | represent primitive endoderm
Facets:
value: presumably
type: DEGREE
Source sentences:
text: Successful propagation of the ICM was associated with the appearance of ES‐like cells in the outgrowth, whereas differentiated cells, presumably representing primitive endoderm and trophectoderm, either died or disappeared upon repeated passaging (Fig. 1 ).