, pub-3329694440549975, DIRECT, f08c47fec0942fa0, pub-3329694440549975, DIRECT, f08c47fec0942fa0  
Picture of IVF embryo - this is a fertilized human egg (also called oocyte) This is the morning after IVF egg retrieval when we check eggs for fertilization Male and female genetic material (DNA) are in the 2 pronuclei - center of the photo .
Photo of a high quality day 3 human embryo at the 8-cell stage 6 cells are visible in this plane of focus
This picture shows a high quality blastocyst embryo on day 5 5 day blastocyst transfer can result in high pregnancy rates with low multiple pregnancy rates
Pictures of high quality and low quality eggs 
Egg, also called an "oocyte" is in center of picture Many cumulus cells from the ovary are seen around the egg This is a low quality, oocyte from a woman 41 years old Egg is irregularly shaped and dark

Picture of another low quality, oocyte from a woman over 40 Polar body is visible at 10 o'clock Testing for ovarian reserve can help us identify egg quantity and quality problems before treatment is considered

A "good" looking egg (expected to be high quality) from a 32 year old woman