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JAMA. 1958;167(17):2090-2097. doi:10.1001/jama.1958.02990340050012.
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Microradiographic Lab at UCLA.—  A microradiographic laboratory for taking tiny x-ray pictures of microscopic tissue has been established at the University of California at Los Angeles Medical School. The new unit is under the direction of Richard C. Greulich, Ph.D. Techniques are based on the same principles as those of conventional x-ray imaging. However, very fine-grained photographic emulsion is necessary for the high resolution required to distinguish adjacent regions of altered mass or chemistry. The specimen must be in a vacuum so that the low-energy x-rays can penetrate air molecules sufficiently to produce a good negative. The microradiograms are about the size of a postage stamp and are examined in the light microscope.

Dr. Shaw Named Pediatric Head.—  Dr. Edward B. Shaw, San Francisco pediatrician, has been appointed professor of pediatrics and chairman of the department at the University of California School of Medicine, San Francisco. Dr. Shaw has


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