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Hypersensitivity Reactions: Delayed Hypersensitivity Reactions

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Delayed-Type Hypersensitivity (DTH), or Type IV hypersensitivity, is a cell-mediated immune response. It occurs when T cells, rather than antibodies, mediate a reaction to specific antigens. It is characterized by a delayed onset (1-2 days) and involves the recruitment of macrophages to the inflammation site.The initiation of a DTH response begins with the sensitization of T cells. During this phase, which lasts at least 1-2 weeks, antigen-specific T cells are activated, clonally expanded, and...

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Updated: Feb 17, 2026

Acupoint Catgut Embedding Therapy in Traditional Chinese Medicine for Managing Allergic Rhinitis

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Published on: December 20, 2024

Self-Reported Racial Group-Associated Immune Signaling Differences in Atopic Dermatitis and Dupilumab Treatment

Duan Ni^1,2,3,4, Ralph Nanan^1,2,3

¹Sydney Medical School Nepean, The University of Sydney, Sydney, New South Wales, Australia.

|February 15, 2026

Summary

No abstract available in PubMed .

Keywords:

atopic dermatitis bioinformatics clinical immunology personalized medicine precision medicine

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