-In Cases 1 and 2 in the Table, the Mothers

question 1

Multiple Choice

-In Cases 1 and 2 in the table, the mothers would be able, if needed, to supply blood to the newborn even seven to nine months after birth; the same would not be true for Case 3. This is because

• A) the fetus in Case 3 would provoke an immune response in the mother that would carry over after the birth.
• B) the newborn in Case 3 would soon be able to make antibodies to the B antigen of the mother.
• C) newborn children, until about age 2, do not make appreciable antibodies, except against Rh⁺ antigen.
• D) passive immunity would have worn off for the third newborn, but not for the other two.
• E) this difference is based on which of the mothers has been nursing her children, not on blood antigens.

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