<n0:ComplexDefinition xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:def-definition>The killing of target cells by changing the natural specificity of cytotoxic T cells by the use of an antibody or other molecule capable of binding to both the T cell and to the target cell. Often involves hybrid (bispecific) antibodies having distinct specificities for the T cell and for the target cell. (NCI/OSP)</n0:def-definition><n0:def-source>NCI</n0:def-source></n0:ComplexDefinition>