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. 1978 Aug;21(2):354–359. doi: 10.1128/iai.21.2.354-359.1978

Depression of contact sensitivity by enhancement of suppressor cell activity in Pseudomonas aeruginosa-injected mice.

V Colizzi, C Garzelli, M Campa, G Falcone
PMCID: PMC422002  PMID: 99365

Abstract

Heat-killed Pseudomonas aeruginosa depresses contact sensitivity to oxazolone in C56BL/6 mice. The draining lymph nodes and spleens of mice exhibiting an impaired reactivity to oxazolone contain a cell population capable of depressing the response to oxazolone of recipients sensitized immediately before cell transfer. The suppressive activity of these cells appears to be antigen specific, since they do not affect the response to picryl chloride and because they do not arise in P. aeruginosa-injected but not oxazolone-sensitized mice. These suppressor cells occur in the draining lymph nodes and spleen at 3 and 4 days after sensitization, respectively, and have precursors sensitive to cyclophosphamide. It is concluded that P. aeruginosa depresses contact sensitivity to oxazolone by enhancing the suppressor cell activity of the regulatory cells which arise during conventional sensitization.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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