634 ISOTOPIC TRACERS AND NUCLEAR RADIATIONS [Chap. 30 



metabolism with the aid of artificial radioactive isotopes. V. Absorption, excretion 

 and distribution of labeled sodium in rats maintained on normal and low sodium 

 diets, /. Biol. Chem., 136, 35-46 (1940). 



Na 32 Greenberg, D. M., R. B. Alrd, M. D. D. Boelter, W. W. Campbell, W. E. 

 Cohn, and M. M. Murayama: A study with radioactive isotopes of the per- 

 meability of blood-cerebrospinal fluid barrier to ions, Am. J. Physiol., 140, 47-64 

 (1944). 



Na 33 Griffiths, J. H. E., and B. G. Maegraith: Distribution of radioactive sodium 

 after injection into the rabbit, Nature, 143, 159-160 (1939). 



Na 34 Hahn, L., and G. Hevesy: Rate of penetration of ions through the capillary wall, 

 Acta Physiol. Scand., 1, 347-361 (1941). 



Na 35 Hahn, L. A., G. Hevesy, and O. H. Rebbe: Do the potassium ions inside the 

 muscle cells and blood corpuscles exchange with those present in the plasma? 

 Biochem. J., 33, 1549-1558 (1939). 



Na 36 Hamilton, J. G.: The rates of absorption of radioactive isotopes of sodium, 

 potassium, chlorine, bromine, and iodine in normal human subjects, Am. J . 

 Physiol, 124, 667-668 (1939). 



Na 37 Hamilton, J. G.: The rates of absorption of radiosodium in normal human sub- 

 jects, Proc. Natl. Acad- Sci. U.S., 23, 521-527 (1937). 



Na 38 Hamilton, J. G., and G. A. Alles: The physiological action of natural and arti- 

 ficial radioactivity, Am. J. Physiol., 125, 410-413 (1939). 



Na 39 Hamilton, J. G., and R. S. Stone: Excretion of radiosodium following intravenous 

 administration in man, Proc. Soc. Expetl. Biol. Med., 35, 595-498 (1937). 



Na 40 Hamilton, J. G., and R. S. Stone: The intravenous and intraduodenal administra- 

 tion of radiosodium, Radiology, 28, 178-188 (1937). 



Na 41 Hammarsten, E., and G. Hevesy: Rate of renewal of ribo- and desoxyribonucleic 

 acids, Acta Physiol. Scand., 11, 355-343 (1946). 



Na 42 Haven, F. L., and H. C. Hodge: A review of the applications of radioactive isotopes 

 to the study of growth, Growth, 5, 257-266 (1941). 



Na 43 Heppel, L. A.: The diffusion of radioactive sodium into the muscles of potassium- 

 deprived rats, Am. J. Physiol., 128, 449-454: (1940). 



Na 44 Hoagland, D. R., and T. C. Broyer: Accumulation of salt and permeability in 

 plant cells, /. Gen. Physiol., 24, 865 (1942). 



Na 45 Hoagland, D. R., T. C. Broyer, and P. R. Stout: Upward movement of salt in 

 the plant with special reference to metabolic activities of roots, Science, 91, 454 

 (1940). 



Na 46 Hodge, H. C, W. F. Koss, J. T. Ginn, M. Falkenheim, E. Gavett, R. C. 

 Fowler, I. Thomas, J. F. Bonner, and G. Dessauer: The nature of the insoluble 

 sodium of bone. The absorption of sodium at forty degrees by bone, dentin, 

 enamel, and hydroxyapatite as shown by the radioactive isotope, /. Biol. Chem., 

 148, 321-331 (1943). 



Na 47 Holm- Jensen, I., A. Krogh, and V. Andwartiovaara: Some experiments on the 

 exchange of potassium and sodium between single cells of Characeae and the 

 bathing fluid, Acta Botan. Fennica., 36, 1-22 (1944). 



Na 48 Hubbard, J. P., W. N. Preston, and R. A. Ross: The velocity of blood flow 

 in infants and young children determined by radioactive sodium, /. Clin. Invest., 

 21, 613-617 (1942). 



Na 49 Johnston, G. W., and C. O. Lee: A radioactive method of testing absorption 

 from ointment bases, /. Am. Pharm. Assoc, 32, 278-280 (1943). 



Na 50 Jorgensen, C. B., H. Levi, and H. H. Ussing: On the influence of the neuro- 



