All of the Following Are Accurate Statements About Neonatal Immunity

Multiple Choice

All of the following are accurate statements about neonatal immunity EXCEPT:

A) Transfer of maternal IgG across the placenta is mediated by an Fc receptor structurally similar to class I MHC.
B) IgA is absorbed in the gut from breast milk and re-secreted by the infant into the bronchial mucosa.
C) IgA secretion into breast milk involves transport through breast epithelial cells, and is dependent on the poly-Ig receptor.
D) Transport of IgG across the neonatal intestinal epithelium is mediated by an Fc receptor structurally similar to class I MHC.
E) Loss of maternal antibodies is partly responsible for increased frequency of infections in infants at about 6 months of age.