7 St. 25 Min, 22 Feb 2002 Jahr - Weeks 3 The cavity will soon be the yolk sac, delivering nutrients to the embryo. The egg is now a "blastocyst" burrowing into the blood-rich uterine lining.

https://www.babycenter.com/6_your-pregnancy-3-weeks_1049.bc

8 Dez 2017

7 St. 25 Min, 22 Feb 2002 Jahr

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