GENERAL HISTOLOGY

Detailed explanation-1: -Innate immunity: Everyone is born with innate (or natural) immunity, a type of general protection. For example, the skin acts as a barrier to block germs from entering the body.

Detailed explanation-2: -A baby’s immune system is not fully developed when they are born. It gets stronger as the baby gets older. The immune system works throughout our lives fighting germs that can cause disease. A mother’s antibodies are shared with their baby through the placenta during the third trimester (last 3 months) of pregnancy.

Detailed explanation-3: -Natural immunity: Immunity that is naturally existing, Natural immunity does not require prior sensitization to an antigen.

Detailed explanation-4: -Naturally acquired passive immunity occurs during pregnancy, in which certain antibodies are passed from the maternal blood into the fetal bloodstream in the form of IgG. Antibodies are transferred from one person to another through natural means such as in prenatal and postnatal relationships between mother and child.