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During pregnancy, genetic material and cells are bi-directionally exchanged between the fetus and mother [1], following which there can be persistence of the foreign cells and/or DNA in the recipient [21, [31. This naturally acquired microchimerism (Mc) may impart beneficial or adverse effects on human health. Fetal Mc, which describes the persistence of cells and/or DNA of fetal origin in the mother acquired during pregnancy, has been associated with several different autoimmune diseases as weir
as implicated in tissue repair and immunosurveillance [41-[6].
found evidence of male DNA inside the brains of women up to 94 years old. The study, published in 2012, wasn't new — but it was real, lending the idea at least an air of legitimacy.