MICROCHIMERISM:-In Biology, if a tissue/organism/organ carries DNA from different distinct hosts, then it is called Chimerism.👨🔬Desai et al. in the 1960s used the term when they found maternal leukocytes in the umbilical cord blood from newborn infants. It only meant that the mother supplied WBCs to the newborn.This study then took off. Finally, doctors, scientists,...