Mmastodon ScienceBiology first seen 1 d ago, last 3 min ago, peak #7

Pregnancy leaves fetal cells behind, making mothers chimeras

Original: # ICYMI : If you've ever been pregnant, you're a chimera. I've known this for several years. But what this article taugh

A widely shared post highlights fetal microchimerism: during pregnancy, fetal cells cross into the mother's body and can persist for decades. The author notes that even a miscarriage over 20 years ago may have left that embryo's genetic material in her body, which she could potentially pass on. Readers are engaging with the surprising biology behind it.

Why now: The surprising claim that all women who have been pregnant carry fetal genetic material is generating conversation about fetal microchimerism.

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Evidence

• # ICYMI : If you've ever been pregnant, you're a chimera. I've known this for several years. But what this article taught me is that even though I miscarried at 6 weeks more than 20 years ago, I might still harbor that embryo's genetic material -- and might have passed it to my… · courtcan · 37

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