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active immunity

noun, Immunology.
immunity in an organism resulting from its own production of antibody or lymphocytes.
Compare passive immunity.
Origin of active immunity
First recorded in 1910-15 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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active immunity in Medicine

active immunity n.
Immunity resulting from the development of antibodies in response to the presence of an antigen, as from vaccination or exposure to an infectious disease.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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active immunity in Science
active immunity  
See under acquired immunity.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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