Human Fertilization
Fertilized human egg pictures from IVF, in vitro fertilization

Advanced Fertility Center of Chicago
In Vitro Fertilization Specialist Clinic
Gurnee & Crystal Lake, Illinois

	Embryo Related Pages Fertilization process - and video ICSI - pictures ICSI - video Embryo pictures Day 3 embryo grading Day 5 embryo grading IVF Related Pages In vitro fertilization, IVF ICSI - inject sperm into eggs IVF success rates IVF costs and pricing plans Costs for fertility treatments
Picture of IVF fertilized egg at high magnification Male and female genetic material (DNA) is in the 2 pronuclei (circular structures) in the center 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 in the center
• Without fertilization, the egg would look the same, but without any pronuclei
• When 3 pronuclei are present instead of 2, then it is a triploid zygote - which has an extra set of 23 chromosomes - and can not make a normal baby.
• A fertilized egg is also called a "zygote", a "1 cell embryo" or a "2 pronuclear embryo"

Advanced Fertility Center of Chicago | Gurnee, IL (847) 662-1818 | Crystal Lake, IL (815) 356-1818

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