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The Journal of Immunology, Vol 143, Issue 4 1118-1122, Copyright © 1989 by American Association of Immunologists
ARTICLES |
S Strober, S Dejbachsh-Jones, P Van Vlasselaer, G Duwe, S Salimi and JP Allison
Department of Medicine, Stanford University School of Medicine, CA 94305.
Several cloned lines of natural suppressor (NS) cells were studied for their expression of the TCR complex. Almost all bore the CD3+CD4-CD8- surface phenotype with the alpha, beta TCR as judged by immunofluorescent staining. Immunoprecipitation experiments showed a spot on two-dimensional gels which is characteristic of the TCR heterodimer, but neither gamma- nor delta-chains could be precipitated with the appropriate antibodies. NS cells were stimulated to proliferate in vitro with anti-CD3 antibodies and PMA in the presence of irradiated spleen cells. However, anti-CD3 antibodies did not inhibit the suppressive activity of the NS cells. The role of the TCR complex in the suppressive function of these cells remains to be elucidated.
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