Human Fertilization
Fertilized human egg pictures from IVF
One-cell embryo, also called a zygote, or a two pronuclear embryo
Advanced
Fertility Center of Chicago
In Vitro Fertilization Specialist Clinic
Gurnee & Crystal Lake, Illinois

Picture of a fertilized egg at high magnification
Male and female genetic material (DNA) is in the 2 pronuclei (circles) in
the center
A polar body is seen at one o'clock - just under the shell
The (ovarian) cumulus cells around the egg (see egg images) have
been stripped off
This is what we see at the "fertilization check" the morning after the IVF egg
retrieval procedure
Evidence of fertilization is shown by the presence of the 2 pronuclei
Without fertilization, the egg would look the same, but without any pronuclei
More
embryo and in vitro fertilization pictures
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