GJLP / SCIENCE PHOTO LIBRARY GJLP / SCIENCE PHOTO LIBRARY
Healthy heart and lungs. Coloured Magnetic Resonance Imaging (MRI) scan of a vertical slice through a patient's chest (frontal view), showing a normal heart and lungs. The heart is coloured brown and red (at lower right) the thorax is blue and the lungs are black spaces. MRI uses radio-waves to produce images of "slices" through the human body.
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