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51.0 MB (6.1 MB compressed)
5070 x 3516 pixels
42.9 x 29.7 cm ⏐ 16.9 x 11.7 in (300dpi)
DR GOPAL MURTI / SCIENCE PHOTO LIBRARY DR GOPAL MURTI / SCIENCE PHOTO LIBRARY
Lymph node. Light micrograph of a section through a healthy human lymph node. The follicles (oval, purple) are the regions in which B-lymphocyte white blood cells proliferate. Surrounding the lymph node is a collagenous capsule (pink, at left). This supportive tissue extends into the node as a trabecula (pink). Lymph nodes are kidney-shaped organs into which the fluid from body tissues drains and is filtered. The nodes are packed with white blood cells that destroy disease-causing microorganisms within the fluid. The granular appearance of the tissue is caused by the presence of thousands of lymphocyte white blood cells. Magnification: x400 at 35mm size.
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