SEM of T-lymphocyte killer cell

SEM of T-lymphocyte killer cell

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Credit: DR. ANDREJS LIEPINS/SCIENCE PHOTO LIBRARY

Caption: False-colour scannning electron micrograph of a T-lymphocyte killer cell (small foreground cell), attacking a large cancer tumour cell. The T- 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 survive, however, by budding off a number of blebs or blisters (seen here), which form a protective barrier between itself & the lymphocyte, preventing contact. 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, t

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