STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Lymphocyte white blood cell. Coloured scanning electron micrograph (SEM) of a section through a lymphocyte, showing the cell nucleus (pink) and cytosol (yellow). Lymphocytes are involved in the immune system's defence mechanisms, lymph system, and involved in antibody production. Magnification: x6000 when printed 10 centimetres wide.
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