JOSE CALVO / SCIENCE PHOTO LIBRARY JOSE CALVO / SCIENCE PHOTO LIBRARY
Light micrograph of a Langhans-type giant cell in the periphery of a tuberculosis granuloma (inflamed nodule). In the lower half is a chronic inflammatory infiltrate. In the upper half is an area of fibrosis. Magnification: x180 when printed at 10 centimetres wide.
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