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JAMA. 1954;155(17):1519-1520. doi:10.1001/jama.1954.03690350061022.
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ABSTRACT

Muscular Exertion and Eosinophils.  —Dr. Manuel Hernandez has investigated the effect of muscular exertion on circulating eosinophils at the Phisiologic Pathology Laboratories of the School of Medicine in Lima (Revista médica peruana, January, 1954). By determining the hypophysoadrenal reserve after muscular exertion, he hopes to contribute to the understanding of adrenal function. The work was done at an altitude of 150 m. above sea level. Sixteen clinically normal medical students were exercised on an empty stomach for 20 minutes on a treadmill revolving at 8.08 km. per hour. Differential leukocyte counts were made before and after the test and after recovery. Immediately after the test, an acute rise of leukocytes, including eosinophils, was observed. The average increase of the latter was 50%. After the subjects had rested 60 minutes, a striking fall in the number of these same cells was observed. Serial counts were made for four hours. The lowest

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