Assertion: chimera's cell | /r/CapableOf | merge into single embryo
Facets:
value: together
type: MANNER
Source sentences:
text: When they were conceived, two eggs were fertilized, which normally results in fraternal twins, but due to reasons not yet fully understood by medical science at some point along the zygote to blastocyst development stages the cells of both merge together into a single embryo.