Progress is reported in the following studies: the degradation of uric acid in man; the effect cf triiodothyronine on the oxidative metabolism of erythrocytes; the biosynthesis of abnormal proteins in multiple myeloma; tracer studies on the methbolism of DLglutamic acid in man; the effect of triiodothyronine on radiosensitivity of rats; the physiologic and clinical significance of erythropoietin; the measurement of isodose distributions from a revolving beam cobalt-60 therapy unit; tracer studies of protein binding and subcellular localization of digitoxin; applications of carbon-14 in methbolic studies; and tracer studies on the methbolism of progesterone. A list of publications during the period is included. (C.H.)

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