Comment Re:I heard pregnant women are (Score 2) 29
I don't know what you heard, but baby cells can only stay baby cells, they can't become mommy cells,
Sez who?
There's been evidence for some time that post-pregnancy mothers often have clones of stem cells derived from the previous foetus. Sure such a clone would likely start out with its epigenitc programming set for whatever function it had in the baby's development (unless, say, some error in its differentiation is what led to it migrating to the woman's body to set up shop). But once established on the mother's side of the placental barrier, and especially after the birth, the stem cell clone can be expected to continue to run its program under direction of the growth factors in the mother's blood.
That amounts to a transplant of younger stem cells which could be expected to produce differentiated cells for tissue growth and replacemtnt,, with the aging clock set farther back and with some genes from the father to provide "hybrid vigor", filling in for defective genes in the mother's genome or adding variant versions of molecular pathways.