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50.8 MB (4.9 MB compressed)
3521 x 5038 pixels
29.7 x 42.7 cm ⏐ 11.7 x 16.8 in (300dpi)
GJLP / SCIENCE PHOTO LIBRARY GJLP / SCIENCE PHOTO LIBRARY
Normal colon. Barium X-ray showing a healthy colon (white). Barium is radio-opaque and therefore shows up as white on an X-ray. The patient drinks a barium-containing liquid before the X-ray.
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