Uploaded November 2013 | Updated September 2026, 53 minutes ago

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In 2007 for the first time, the Cleavage (Split) of A single Blastocyst's Embryoblastic Stem Cells into 2 Separate Embryoblasts to make (Monozygotic) Identical twins was witnessed.

This Blastocyst would then grow into a set of Monozygotic Monochorionic-Diamniotic Twins

Footage from "National Geographic-In The Womb (Identical Twins)