ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Chest anatomy. Coloured 3D computer tomography (CT) scan of a transverse section through the chest of a 54 year old patient. The lungs are blue. At bottom is the spine (white) and at top is the heart (red). At centre is the aorta (red), the body's main artery.
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