CAROL AND MIKE WERNER / SCIENCE PHOTO LIBRARY CAROL AND MIKE WERNER / SCIENCE PHOTO LIBRARY
Adoptive T-cell immunotherapy. T-cells specific to a tumour antigen can either be removed from a tumour sample (TILs) or T-cells can be removed from the blood and genetically engineered to be specific to that tumour. Dendritic cells (lower left) are special cells that help the immune system recognize cancer cells. They break down cancer cells into smaller pieces (including antigens), display these antigens so T cells can recognize them. The T cells then initiate an immune reaction against any cells in the body that contain these antigens. Labelled.
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