https://pmc.ncbi.nlm.nih.gov/articles/PMC2633676/ https://pmc.ncbi.nlm.nih.gov/articles/PMC2633676/ (2007) https://academic.oup.com/clinchem/article/67/2/351/6

https://pmc.ncbi.nlm.nih.gov/articles/PMC2633676/ https://pmc.ncbi.nlm.nih.gov/articles/PMC2633676/ (2007) https://academic.oup.com/clinchem/article/67/2/351/6071463?login=false https://academic.oup.com/clinchem/article/67/2/351/6071463?l... (2020) https://en.wikipedia.org/wiki/Microchimerism#Fetomaternal_microchimerism_in_the_brain https://en.wikipedia.org/wiki/Microchimerism#Fetomaternal_mi... IIR, substantial and sustained fetal cell presence in the mother is often a sign that things are going wrong.