Which antibodies cross the placenta and protect the fetus?

Question

Quizplus · Accepted Answer

IgG antibodies can pass through the placenta and provide protection to the fetus against any harmful pathogens that the mother may have encountered. IgA antibodies are typically found in mucosal secretions and do not cross the placenta. IgM antibodies are too large to pass through the placenta and typically indicate a recent infection. IgD antibodies are primarily found on the surface of B cells and have not been shown to provide protection to the fetus.

Which Antibodies Cross the Placenta and Protect the Fetus