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Direct cyto toxicity against chicken erythrocytes in mice part 2 nature of immuno globulin on cyto toxic thymus derived lymphocytes



Direct cyto toxicity against chicken erythrocytes in mice part 2 nature of immuno globulin on cyto toxic thymus derived lymphocytes



Immunology 37(4): 821-826



Direct cytotoxicity raised at an early interval after immunization with chicken erythrocytes (CRBC) was ascribed to .theta.-positive, immunoglobulin (Ig)-bearing lymphocytes. Cytotoxicity of such effector cells was not affected by trypsinization. Cytotoxity was reduced by the treatment of effector cells with anti-IgG serum and complement or by the addition of anti-IgG serum to culture medium for cytotoxicity test. When the effector cells were treated with trypsin before cytotoxicity test, such procedures with anti-IgG serum did not affect their cytotoxicity. Ig molecules on cytotoxic T [thymus-derived] lymphocytes may not be an essential element for antigen recognition. This explanation may be supported by the fact that cytotoxicity against CRBC could be raised in 600 rad irradiated, thymus-cell transferred mice in the absence of antibody production.

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Accession: 005164761

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