Hi there is another quirky idea regarding some autoimmune diseases which
suggests that maternal-fetal traffic of immature or virgin T cells may
contribute to disease progression. Traffic can go both ways but may, for
women, be more important as a pregnant person as opposed to being the fetus.
Diana Bianchi, who work with the herzenbergs back in the day, has found male
cells in a women who's last pregnancy (her son) was 27 years prior. Kinda
interesting don't you know!