Human Fertilization
Fertilized human egg pictures from IVF
Advanced Fertility Center of Chicago
In Vitro Fertilization Specialist Clinic
Gurnee & Crystal Lake, Illinois

Picture of IVF egg showing fertilization process
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.
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