22.4 MB (623.6 KB compressed)
2616 x 2989 pixels
22.1 x 25.4 cm ⏐ 8.7 x 10.0 in (300dpi)
STEM JEMS / SCIENCE PHOTO LIBRARY STEM JEMS / SCIENCE PHOTO LIBRARY
White blood cell. Coloured scanning electron micrograph (SEM) of a T-lymphocyte, a type of white blood cell. T-lymphocytes characteristically have long microvilli that project from the cell's surface. They are an important part of the body's immune system. They track down and destroy foreign bodies and infected cells. They also help to mediate the production of antibodies to invading organisms, such as bacteria and viruses. T- lymphocytes originate in the bone marrow, but mature in the thymus gland. Magnification: x9250 when printed 10cm high.
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