51.1 MB (1.8 MB compressed)
4581 x 3898 pixels
38.9 x 33.0 cm ⏐ 15.3 x 13.0 in (300dpi)
NIBSC / SCIENCE PHOTO LIBRARY NIBSC / SCIENCE PHOTO LIBRARY
Coloured scanning electron micrograph of a normal T-lymphocyte, a type of white blood cell. Characteristic of normal T-lymphocytes are the long microvilli projecting from the cell surface. T-lymphocytes are susceptible to infection by the Human Immunodeficiency Virus (HIV), the causative agent of Acquired Immune Deficiency Syndrome (AIDS). There are three major types of white blood cells: granulocytes, lymphocytes and monocytes. Together they protect the body against the invasion of foreign substances and participate in antibody production. Magnification: x2750 at 6x6cm, x1,530 at 35mm size.
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