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From the Biology Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20014
Abstract
The mechanism of the terminal steps in the lysis of antibody-sensitized tumor cells by complement (TAC) was studied. It was shown that once complement has reacted, lysis proceeded even in the absence of fluid-phase complement. Transformation of TAC to dead cells was found to be at least a two-step process: one of the steps was temperature dependent whereas the other was reversibly inhibited by EDTA. In analogy to the hemolytic system, TAC has been designated T*.
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