Inner Cell Mass Gallery
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Choose from 3 pictures in our Inner Cell Mass collection for your Wall Art or Photo Gift. All professionally made for Quick Shipping.
A blastocyst begins implanting in the wall of the uterus
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Microscopic view of a blastula during pregnancy
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Featured Image
Blastocyst implantation, diagram
Blastocyst implantation. Diagram of the blastocyst (lower right), a cellular stage that occurs during human (and all mammalian) reproduction, five days after fertilisation. It is the stage between the morula and the gastrula. During this stage, implantation (upper left) takes place on the wall of the uterus (endometrium, orange). The outer tropoblast layer (light grey) implants to form the placenta (purple). The inner cell mass (darker grey) will form the embryo. At right, the chorion (red), yolk sac (right, black), amniotic cavity (left, black), amnion (left, light blue), embryonic disk (right, light blue), and blood spaces (pink) are also shown
© FRANCIS LEROY, BIOCOSMOS/SCIENCE PHOTO LIBRARY