The radioactivity of atmospheric krypton in 1949-1950.

The uptake and elimination of krypton and other inert gases by the human body.

Measurement of Muscle Blood Flow in the Human Forearm with Radioactive Krypton and Xenon.

IN 1949 Kety proposed that if the rate of removal from the site of injection of an intramuscularly injected radioactive isotope was limited principally by flow, then the clearance of the tracer from the injection site could be used to measure local blood flow.' In the past, sodium-24 or iodine-131 has been used for this purpose, but with considerable variability in the results obtained in seria...

Relative Measurement in Vivo of Accumulation of Radioiodine by the Human Thyroid Gland: Comparison with Radioactivity in Peripheral Tissues.

A proven case of congenital toxoplasmosis.

Congenital toxoplasmosis has been recognized with increasing frequency since it was first described by Wolf, Cowen, and Paige in 1939, and has now been reported from many parts of the world. The first description of a case in this country was given by Jacoby and Sagorin in 1948. Since then a number of others have been reported (Farquhar and Turner, 1949; Wilson and Smith, 1949; Ridley, 1949; Nu...

Action Spectra for Photoreactivation of Ultraviolet-irradiated Escherichia Coli and Streptomyces Griseus* B~ Albert Kelner~

The lethal effect of ultraviolet light, k 254 m/z, on Esckerichia toll, Streptomyces griseus, and other microorganisms can be largely prevented if following ultraviolet irradiation the cells are exposed to visible and near-ultraviolet light in the vicinity of 400 m~ (Kelner, 1949 a, 1949 b, 1950). Such light-induced recovery (or pkotoreactivation, pkotore~ersal, or pkotorecwoery) has been confi...