AWhat Is Meant by the Term "Passive Transfer of Immunity

Essay

A.What is meant by the term "passive transfer of immunity," and how is it achieved? Give examples.
B.Give the isotype of the antibodies involved in (i)placental transfer and (ii)transfer into breast milk,and explain why these antibodies are important.
C.Do you think it is possible for a pregnant mother who has an autoimmune disease to transfer autoreactive antibodies to the developing fetus? Explain your answer.