Why Mothers Kiss Their Babies? — Does Immune System Play as a Protective Receptor of Chemical Determinants Involved in Mother-Infant Bonding?

Mother-child bonding is not confined to human beings, rather all living animals show baby love. It is quite interesting to intervene in the mechanisms or causative factors of this affection and its consequences. In this article, we attempt to delineate that the chemical factors could be responsible for the affection or aggressiveness which ultimately leads to induce passive immunity in newborn against external harmful pathogens among mammals.