Dennis Lo, molecular biologist: There is an exchange of genetic information between the baby and the mother'

Conventional wisdom is that maternal and fetal blood circulation is separate, but there is an intimate exchange of genetic material between mother and baby, allowing for noninvasive prenatal diagnosis before birth.

Lo's research led to a noninvasive test for Down syndrome, revolutionizing prenatal diagnosis by reducing the need for risky invasive procedures.

Read at english.elpais.com