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White blood cells

White blood cells

P266/0035

Rights Managed

41.0 MB (4.5 MB compressed)

4601 x 3118 pixels

38.9 x 26.4 cm ⏐ 15.3 x 10.4 in (300dpi)

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Credit

DON FAWCETT / SCIENCE PHOTO LIBRARY DON FAWCETT / SCIENCE PHOTO LIBRARY

Caption

Immune system cells. Coloured Scanning Electron Micrograph (SEM) of a macrophage (blue) and two lymphocyte (yellow) cells of the human immune system. These cell types are both derived from white blood cells. The larger macrophage (or mono- cyte) often has an irregular shape. Macrophages engulf and digest foreign bodies; they wander across tissues to sites of infection and are the first immune response. Lymphocytes (T-cells or B- cells) are rounded and occur in the blood; they recognise foreign antigens and destroy invaders such as viruses and bacteria. Both cell types have thin projections on their surface called filopodia which are used for support and motility.

Release details

Model release not required. Property release not required.

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