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Lymphoid follicle

Lymphoid follicle

P290/0030

Rights Managed

40.2 MB (5.6 MB compressed)

4506 x 3120 pixels

38.1 x 26.4 cm ⏐ 15.0 x 10.4 in (300dpi)

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Credit

CNRI / SCIENCE PHOTO LIBRARY CNRI / SCIENCE PHOTO LIBRARY

Caption

Lymphoid follicle. Light micrograph of a section through a lymphoid follicle in a human lymph node. The follicle is rich in immune system cells (lymphocytes) called B-cells. Each B-cell responds to a different foreign molecule (antigen). Specialised cells (follicular dendritic cells) present antigens to the B-cells. When a B-cell is exposed to its antigen, it begins to divide in the germinal centre (pale, centre). B-cells produce antibodies which protect the body against disease organisms. Tissue fluid (lymph) drains through lymph nodes on its way through the system of lymphatic vessels. Magnification: x40 at 35mm size.

Release details

Model release not required. Property release not required.

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