GJLP / SCIENCE PHOTO LIBRARY GJLP / SCIENCE PHOTO LIBRARY
Liver. Artwork of a healthy human liver superimposed onto a male torso with a coloured computed tomography (CT) scan of a human abdomen inset. In this axial (horizontal) section the abdomen is seen from below. The liver is the large organ in the left half of the scan. The liver, the largest internal organ in the body, regulates the levels of most of the main chemicals in the blood, such as glucose (sugar). It also produces proteins for the blood plasma and, along with the kidneys, clears poisonous substances from the blood. CT scanners use X-ray beams to produce "slice" images through the body.
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