A woman carries cells from her children, and children carry their mother’s cells. I don’t see how a woman could carry her sex partners’ cells. Spermatazoa are haploid; they don’t divide; they live one week tops.
If somatic cells could transfer during sex, they would go both ways. Even kissing could transfer.
>>>>A woman carries cells from her children, and children carry their mother’s cells. I don’t see how a woman could carry her sex partners’ cells.
It can’t happen from just having sex... but it can happen from a pregnancy, especially where the child is male. I’m not a doctor so I’ll now duck out of this discussion but I had heard this before and quickly found a couple of links. The process is called microchimerism and it basically is the result of mothers and babies exchanging blood through the placenta...
https://www.livescience.com/62930-why-mom-keeps-baby-cells.html
https://www.insider.com/why-women-retain-male-dna-2018-3