The most abundant type of antibodies which can also cross Placenta, are: A. IgG B. IgM C. IgA D. IgE
Option A. IgG is the only immunoglobulin that crosses the placenta as its Fc portion binds to the receptors present on the surface of the placenta, protecting the neonate from infectious diseases. [3] IgG is thus the most abundant antibody present in newborns.
