A newborn infant may have some immune defense because of the presence of IgA antibodies in its blood. What is the source of these antibodies?
A) Colostrum and breast milk
B) Its own immune response to pathogens
C) The mother's blood via the placenta

Question

Quizplus · Accepted Answer

IgA antibodies are primarily transferred to the newborn through colostrum and breast milk, not through the placenta. This provides the infant with passive immunity from the mother.

A Newborn Infant May Have Some Immune Defense Because of the Presence