We have determined the effect of sheep anti-mouse interferon globulin on the anti-tumor effects of poly I-C, statolon, tilorone, pyran copolymer and BCG in mice inoculated with Ehrlich ascites or L 1210 lymphoma cells. Whereas the anti-tumor effects of poly I-C and statolon were nulified when mice were injected with immunoglobulins, the anti-tumor effects of pyran copolymer and BCG were not modified by this treatment. We conclude that interferon mediates the anti-tumor activity of poly I-C and statolon in these experimental systems. It is suggested that anti-interferon serum provides a direct method of determining whether other biologic effects attributed to viruses, poly I-C, statolon, tilorone, pyran copolymer (and possibly other interferon inducers) are mediated or not by interferon.
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Gresser et al. (1978) studied this question.
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