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52.5 MB (6.2 MB compressed)
3675 x 4994 pixels
31.0 x 42.2 cm ⏐ 12.2 x 16.6 in (300dpi)
PROF. P. MOTTA / DEPT. OF ANATOMY / UNIVERSITY "LA SAPIENZA", ROME / SCIENCE PHOTO LIBRARY PROF. P. MOTTA / DEPT. OF ANATOMY / UNIVERSITY "LA SAPIENZA", ROME / SCIENCE PHOTO LIBRARY
Osteoporosis. False-colour scanning electron micrograph (SEM) of a trabecula in the cancellous (spongy) bone tissue affected by osteoporosis. The cancellous tissue fills the interior of the bones and in osteoporosis its density decreases, increasing the brittleness of the bones and the probability of fractures. In this case several darker empty-bone areas are visible. Osteoporosis usually affects women, above all after the menopause, because their ovaries no longer produce oestrogen hormones which help to maintain bone mass. Magnification: x110 at 6x7cm size. Magnification: x180 at 4x5 inch size.
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