Assertion: zygote's cell | /r/HasProperty | exposed to signal
Facets:
value: from outside the group
type: OTHER
value: in this mechanism
type: OTHER
Source sentences:
text: In this mechanism, one or two cells from a group of cells with the same developmental potential are exposed to a signal (morphogen) from outside the group.
text: Only the cells exposed to the signal are induced to follow a different developmental pathway, leaving the rest of the equivalence group unchanged.