Two-cell Embryo
by Pascal Goetgheluck/science Photo Library
Title
Two-cell Embryo
Artist
Pascal Goetgheluck/science Photo Library
Medium
Photograph - Photograph
Description
Two-cell embryo. Light micrograph of a 2-cell human embryo. The cells, or blastomeres, result from the first division of the fertilized egg, which normally occurs 30 hours after fertilisation. They are surrounded by the zona pellucida layer. Outside this are cumulus corona cells (small circles), the remains of the corona radiata that offered the egg support and nutrition when it was in the ovary. Photographed at the Hospital Cochin, Paris, France. Magnification unknown.
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September 13th, 2018
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