. Adventures in radioisotope research;. Radioactive tracers; Radiobiology. NOTE ON KESOKPTION RATE OF INJECTED NaU'^CO, 839. mm. Fig. 1. When following up these experiments half a year later — the experi- mental arrangement being the same as in the foregoing paper — we found irradiation with 2000 r not to influence the exhalation of ^^COg which follows injection of bicarbonate (Fig. 1). Concomitantly a shift in the reaction of the animals against adrenaline had occurred. In the previous investigation 2 y adrenaline, given subcutaneously 15 min before the injection of the labelled bicarbonate,
. Adventures in radioisotope research;. Radioactive tracers; Radiobiology. NOTE ON KESOKPTION RATE OF INJECTED NaU'^CO, 839. mm. Fig. 1. When following up these experiments half a year later — the experi- mental arrangement being the same as in the foregoing paper — we found irradiation with 2000 r not to influence the exhalation of ^^COg which follows injection of bicarbonate (Fig. 1). Concomitantly a shift in the reaction of the animals against adrenaline had occurred. In the previous investigation 2 y adrenaline, given subcutaneously 15 min before the injection of the labelled bicarbonate, was found to decrease the I'^COg-output by about 30% in contrast to an increased output of 24% found in the present investigation (Table 1). Table 1 Change in initial Significance test for the exhalation of diff. between control and Hormone Amount of subcutaneously injected liormone "CO2 caused by hormone injection % treated animals n t P Adrenaline 2 y, 15 min. before NaH^COjCi)... + 14 99 10 y, 15 min. before NaH^COa — 19 ACTH On the two days prior to experiment I. U. On day of experiment I. U. 10 min. before NaHi'COjO + 52 (•) Similar to the procedure in the previous Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hevesy, Georg von, 1885-1966. New York, Pergamon Press
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