This animation created by Nature Reviews Cancer and Nature Reviews Immunology illustrates how tumour cells are sensed and destroyed by cells of the immune system and how tumours can evolve to evade immune-mediated elimination. Scientists are developing new immunotherapies that help the immune system to ‘fight back’ — the animation explains how these exciting new drugs work.
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See also: Nature Reviews Drug Discovery collection on Cancer immunotherapy: http://www.nature.com/nrd/collections/cancerimmuno
Further reading: Focus on Tumour immunology & immunotherapy: http://www.nature.com/reviews/focus/tumourimmunology/index.html