Passive Cutaneous Anaphylaxis
"Passive Cutaneous Anaphylaxis" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus,
MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure,
which enables searching at various levels of specificity.
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.
Below are MeSH descriptors whose meaning is more general than "Passive Cutaneous Anaphylaxis".
Below are MeSH descriptors whose meaning is more specific than "Passive Cutaneous Anaphylaxis".
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