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51.1 MB (51.0 MB compressed)
4885 x 3656 pixels
41.4 x 31.0 cm ⏐ 16.3 x 12.2 in (300dpi)
AJ PHOTO / SCIENCE PHOTO LIBRARY AJ PHOTO / SCIENCE PHOTO LIBRARY
X-ray (front view) of the chest in a patient fitted with a heart pacemaker showing a wire implant that connects the pacemaker (not seen) to heart muscle. This pacemaker was fitted to treat heart block by keeping the heart beating regularly.
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