Schematic view of how a human embryo acquires spatial coordination of its primary cell fates through gastrulation. (IMAGE)

Kumamoto University

Schematic view of how a human embryo acquires spatial coordination of its primary cell fates through gastrulation.

Caption

After fertilization, a human embryo implants into the uterus (day 6-12) and gastrulation starts soon afterwards, with the primitive streak emerging at about day 14. Gastrulation allocates cell fates and spatial coordinates to epiblast cells, laying down the foundation of the human body.

Credit

Dr. Guojun Sheng; Credit for the “Fetus in the womb” sketch by Leonardo Da Vinci: Royal Collection Trust / © Her Majesty Queen Elizabeth II 2021

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Permission for commercial use of the “Fetus in the womb” sketch by Leonardo Da Vinci must be obtained from the Royal Collection Trust. Any non-commercial use must include the credit line. (https://www.rct.uk/collection/919102/the-fetus-in-the-womb-sketches-and-notes-on-reproduction)

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