Medicine: Sludged Blood

One of medicine's big mysteries is the bodily process that translates disease into death. One man who has been stubbornly looking for an answer is 43-year-old Dr. Melvin H. Knisely, a gaunt, tall (6 ft. 3) physiologist at the University of Chicago. For 17 years, Dr. Knisely and a squad of co-workers at Chicago and the University of Tennessee have been bending over their microscopes, laboriously studying the circulation of the blood. Last fortnight, Science published their epochal findings.

Using a special quartz-rod light that he developed himself to make blood vessels transparent and three-dimensional under the microscope (TIME, Nov. 18, 1940),


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