A reaction similar to anaphylactic shock but not requiring the incubation period characteristic of induced sensitivity and unrelated to antibody-antigen reactions.
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- anaphylactic shock,
- anaphylactoid purpura,
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.