SEM of T-cell attacking two cancer cells

SEM of T-cell attacking two cancer cells

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Credit: DR. ANDREJS LIEPINS/SCIENCE PHOTO LIBRARY

Caption: False-colour scanning electron micrograph of a T-lymphocyte killer cell (small), attacking two large cancerous tumour cells. The lymphocyte, a white blood cell, must make intimate contact with the tumour cell. It does so by recognizing antigens on the tumour's surface. Following contact, the tumour cell undergoes distinct structural changes; loss of microvilli (small projections), perforation & ultimately death. The tumour cell may defend itself by budding off a number of blebs or blisters, which form a protective barrier, preventing any contact by the lymphocyte. Magnification: X 2,500 at 35mm size.

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Keywords: cancer, cancer cell, cancerous, condition, disease, disorder, healthcare, lymphocyte, malignancy, malignant, medical, medicine, sem, t-cell

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