Induction of suppressor T cells in delayed-type hypersensitivity to Mycobacterium bovis BCG in low-responder mice.
AUTOR(ES)
Nakamura, R M
RESUMO
The induction of delayed-type hypersensitivity to Mycobacterium bovis BCG was specifically inhibited by suppressor T cells in C3H/He, a strain of mice which is a low responder to BCG. The existence of these suppressor cells was confirmed by an adoptive transfer of spleen cells of BCG-injected mice into cyclophosphamide-treated recipients. The suppressor cells appeared in the spleens of the mice 2 to 7 days after intravenous BCG injection. They were sensitive to anti-theta serum and complement and did not adhere to Sephadex G-10. A pretreatment of the mice with cyclophosphamide eliminated the suppression of delayed-type hypersensitivity. These suppressor cells effectively inhibited the induction of delayed-type hypersensitivity to BCG, but showed only weak effect on the expression of it.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=550938Documentos Relacionados
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