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A physician, using a telenegatoscope, is transmitting close-up images from illuminated x-ray film to a large television screen. Verso: WHO/12589. Europe-Machines of Modern Medicine. By means of a new device, the telenegatoscope, small sections of an x-ray film can immdiately enlarged to aid the physician in his diagnostic. A television camera transmits close-up images from the illuminated to the large television sceen above.
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World Health Organization; World Health Organization website