cancer
Immunotherapy for Cancer
Modified T cells
 T cells are cells of the immune system that can recognize and destroy foreign cells. In this form of cancer treatment, T cells are removed from the blood of a person with cancer. Then in the laboratory, doctors modify these T cells genetically so that they recognize and attack that person's cancer cells. Then they return the modified T cells to the person. The most common example of this strategy is termed chimeric antigen receptor (CAR)-T-cells. CAR-T-cells are an effective therapy in people with Related techniques involve growing the extracted T cells in a culture and activating them by exposure to a certain signaling substance used by the body's cells. Alternatively, T cells may be extracted from the person's tumor, cultured to create a larger amount, and then reinfused. 