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Trans-vivo Delayed Type Hypersensitivity Assay for Antigen Specific Regulation
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Simultaneous pseudolymphomatous and lichenoid tattoo reactions triggered by re-tattooing

T A Chave, N J Mortimer, G A Johnston

    Clinical and Experimental Dermatology
    |February 28, 2004
    PubMed
    Abstract

    No abstract available in PubMed .

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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...