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Specific lysis of the autologous tumor cells by CTL 121. Squamous cell carcinoma line of patient BB49 (BB49-SCCHN), autologous EBV-transformed B cell line (BB49-EBV), and autologous PHA-treated blood lymphocytes (BB49-PBL) were used as 51Cr-labeled target cells in the presence of a 50-fold excess of unlabeled K562. Chromium release was measured after 4 h.
