It’s not always easy to choose whether to store, donate or discard extra IVF embryos. This article first appeared in The Checkup, MIT Technology Review’s weekly biotech newsletter. To receive it in ...
The shaping of human embryos begins 4 days after fertilization with a process called compaction, during which the 8 to 16 cells of the embryo come into close contact to form a tighter structure. Four ...
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