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Antibody-dependent cell-mediated cytotoxicity using the LA-N-5 target (% cytotoxicity; effector: target ratio of 50:1) with and without effectors (day 8 of course 2) in medium containing autologous serum obtained pretreatment (pre) or after the initial 4-hour infusion, for six consecutive assays on patients at 4.8 to 6.0 mg/m2/d. The killing by effectors in 4 hours’ serum was six-fold greater than with effectors in preserum when calculated using lytic units (not shown).
