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FPGEE Chapter 17 Immunization (1 of 34) Sample Questions

1. What is true about active immunity?

A. It is mediated by vaccination.
B. Antibodies transferred from another body.
C. It is transferred from mother to fetus.
D. The person is infected and make antibody in his body.

Ans: D

Tips: Active immunity: The time course of an immune response. Due to the formation of immunological memory, reinfection at later time points leads to a rapid increase in antibody production and effector T cell activity. These later infections can be mild or even unapparent.
When B cells and T cells are activated by a pathogen, memory B-cells and T- cells develop, and the primary immune response results. Throughout the lifetime of an animal these memory cells will "remember" each specific pathogen encountered, and are able to mount a strong secondary response.

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