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Meth- and CMS4-specific CTL cell lines have highly restricted cytotoxic activities. The activities of cloned Meth A- and CMS4-specific CTL against a panel of chemically induced BALB/c sarcoma target cells at an E/T ratio of 6:1 and 0.5:1, respectively, in the standard 4 h 51Cr release cytotoxic assay. Asterisk denotes significance, P < 0.05
