Active immunity requires

A.  the transfer of antibodies from another individual.
B.  direct encounter with the antigen.
C.   that an active virus be used in a vaccine.
D.  that all immune responses to the pathogen result in symptoms of illness.


B

Anatomy & Physiology

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The palatine tonsils lie in the lateral walls of the

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Each sensory neuron responds to stimulus information within its ____________________, which is a circumscribed region of the skin surface surrounding it

Fill in the blank(s) with correct word

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