Blastocyst Attaching to the Wall of the Uterine Cavity

About 6 days after fertilization, the blastocyst attaches to the wall of the uterine cavity, usually near the top. This process, called implantation, is completed by day 9 or 10.

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RHYS LEWIS, AHS, DECD, UNISA/FLIX PRODUCTIONS MEDICAL ANIMATION/SCIENCE PHOTO LIBRARY