Assertion: zygote's cell | /r/LocatedNear | the oocyte
Facets:
Source sentences:
text: Capacitated sperm are attracted to progesterone, which is secreted from the cumulus cells surrounding the oocyte.
text: Fertilization begins with the spermatozoon contacting the cells surrounding the oocyte and ends with the mixing of the 23 male and 23 female chromosomes.