J.C. REVY, ISM / SCIENCE PHOTO LIBRARY J.C. REVY, ISM / SCIENCE PHOTO LIBRARY
False-colour scanning electron micrograph showing two lymphokine-activated natural killer (LANAK) cells (yellow) with a dead cancer cell (red). LANAK cells are lymphocytes that have been doped with Interleukin-2 (IL-2), a protein released naturally by certain key cells of the immune system after they have been activated by foreign antigens. IL-2 amplifies the proliferation of other cell types, including the LANAK cells which attack cancer cells directly. In this technique, blood is removed, doped with IL-2 and cultured in vitro to raise the population of LANAK cells. The product is then re-injected into the patient. Mag: x4700 at 5x7inch, x2000 at 6x7cm size.
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