| Literature DB >> 2960612 |
A Molendijk1, R J van Gurp, I G Donselaar, R Benner.
Abstract
Delayed-type hypersensitivity (DTH) reactions to allogeneic histocompatibility antigens in mice could be systemically suppressed by a single exposure to UV-B irradiation. The extent of suppression reached its maximum 4 days after irradiation, gradually waned thereafter, and disappeared at Day 21. Re-exposure of these mice to UV-B after waning reinduced the state of suppression. The suppression could be transferred to naive mice by means of splenic T lymphocytes. The suppressor T (Ts) cells suppressed the proliferative activity in the lymph nodes draining the site of immunization, but not the activity of already activated DTH-reactive T cells. Phenotypical analysis of these Ts cells revealed that two subpopulations of T cells are involved: one with the Lyt-1+, 2- phenotype, the other with the Lyt-1-, 2+ phenotype.Entities:
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Year: 1987 PMID: 2960612 PMCID: PMC1453979
Source DB: PubMed Journal: Immunology ISSN: 0019-2805 Impact factor: 7.397