Multiple Choice Questions

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Chapter 21, Question 1.


1. The inability of very young children to respond to the measles vaccine due to the persistence of maternal antibody is similar in principle to and exploited in which of the following?

a. low dose tolerance regimens.

b. tolerance to self antigens.

c. neonatal inability to respond to T-independent antigens.

d. passive immunization as a means of preventing active sensitization (e.g., Rhogam injections).