Analytical, Diagnostic and Therapeutic Techniques, and Equipment

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.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

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.

MeSH Record

Classification

Broader headings

Related Concepts

Knowledge Graph

Loading graph…

Drag nodes to rearrange; hover to trace links; click a node to open its page.

MeSH Record

Synonyms

3 entry terms
  • Anaphylaxis, Passive Cutaneous
  • PCA
  • Cutaneous Anaphylaxis, Passive

MeSH Record

Aspects Covered

6 allowable subheadings

Indexed with the subheadings drug effects, ethics, genetics, immunology, physiology, radiation effects.

MeSH Record

History Note

67(65)

MeSH Hierarchy

Tree Numbers

  1. E01w.370.225.812.871w.600
  2. E05.200.812.871w.600
  3. E05.478.594.890w.600
  4. G12.122.754

AMA Style

References

  1. National Library of Medicine. Passive Cutaneous Anaphylaxis. Medical Subject Headings (MeSH). 2026. Unique ID D010323. http://id.nlm.nih.gov/mesh/2026/D010323
  2. Passive Cutaneous Anaphylaxis. In: Wikidata. https://www.wikidata.org/wiki/Q70680667