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34.2 MB (7.1 MB compressed)
3516 x 3398 pixels
29.7 x 28.7 cm ⏐ 11.7 x 11.3 in (300dpi)
LENNART NILSSON / BOEHRINGER INGELHEIM / TT / SCIENCE PHOTO LIBRARY LENNART NILSSON / BOEHRINGER INGELHEIM / TT / SCIENCE PHOTO LIBRARY
Light micrograph of a thigh bone (femur) damaged by rheumatoid arthritis. Rheumatoid arthritis is caused by the immune system attacking the body's own tissues, causing progressive joint and cartilage destruction. As the cartilage is worn away, new bone grows as part of the repair process. This causes stiffness and deformity of the joints. Treatment is with anti-inflammatory drugs and physiotherapy.
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