<n0:ComplexDefinition xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:def-definition>A treatment used to help the immune system fight diseases, such as cancer and infections with certain viruses. T cells are collected from a patient and grown in the laboratory. This increases the number of T cells that are able to kill cancer cells or fight infections. These T cells are given back to the patient to help the immune system fight disease.</n0:def-definition><n0:def-source>NCI-GLOSS</n0:def-source></n0:ComplexDefinition>
<n0:ComplexDefinition xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:def-definition>A technique for enhancing cell-mediated immunity by: 1) artificially increasing the number of specific immunocompetent cells through inoculation of either ex-vivo expanded primarily activated cytotoxic lymphocytes or genetically engineered lymphocytes with enhanced cytotoxic ability or 2) by altering tumor cells to make them more immunogenic.</n0:def-definition><n0:def-source>NCI</n0:def-source></n0:ComplexDefinition>
nci:P98
The concept does not refer to anticancer vaccines and immune modulation through the therapeutic use of cytokines, cell receptors, or other substances.