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immediate reaction

immediate reaction in Medicine

immediate reaction n.
An allergic or immune response that begins within a period lasting from a few minutes to about an hour after exposure to an antigen to which the individual has been sensitized.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Examples from the Web for immediate reaction
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Historical Examples
  • His own horror was too deep to allow of any immediate reaction.

    The Wendigo Algernon Blackwood
  • When the water hit his stomach, there was an immediate reaction.

    The Man Who Hated Mars Gordon Randall Garrett
  • Travis' immediate reaction was objection, but then he realized Buck's wisdom.

    The Defiant Agents Andre Alice Norton
  • Still there was no immediate reaction on the part of the Caribou.

  • The more conservative the mind that you scratch upon this extremely delicate topic the more violent the immediate reaction.

    Our Railroads To-Morrow Edward Hungerford

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