PR J.L. KEMENY, ISM / SCIENCE PHOTO LIBRARY PR J.L. KEMENY, ISM / SCIENCE PHOTO LIBRARY
Horton's disease. Light micrograph of a transverse section through the temporal artery affected by Horton's disease, showing two giant cells engulfing and destroying fragments of the internal elastic lamina. Horton's disease, or, giant-cell arteritis, is an inflammatory disease of blood vessels (arteritis) most commonly involving large and medium arteries of the head. Here, . Magnification: x280, when printed 10 centimetres wide.
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