The Efficiency and Specificity of Adaptive Immune Defenses and Immunological

question 7

Multiple Choice

The efficiency and specificity of adaptive immune defenses and immunological memory improve each time a particular pathogen is encountered because _____.

• A)of protective immunity
• B)effector memory T cells outnumber central memory T cells
• C)the half-life of antibodies made in secondary and tertiary immune responses exceeds that of antibodies made in primary immune responses.
• D)of affinity maturation.

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