| Definition of 'passive cutaneous anaphylaxis' |
U.S. National Library of Medicine |
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1. passive cutaneous anaphylaxis
An evanescent cutaneous reaction occurring when antibody is injected into a local area on the skin and antigen is subsequently injected intravenously along with a dye. The dye makes the rapidly occurring capillary dilatation and increased vascular permeability readily visible by leakage into the reaction site. PCA is a sensitive reaction for detecting very small quantities of antibodies and is also a method for studying the mechanisms of immediate hypersensitivity.
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Definitions of passive cutaneous anaphylaxis
