584 ISOTOPIC TRACERS AND NUCLEAR RADIATIONS [Chap. 30 



D 219 Rea, C. E., and S. Yuster: Effect of deuterium oxide on rat sarcoma R-39, 



Proc. Soc. Expll. Biol. Med., 31, 1058-1060 (1934). 

 D 220 Richards, O. W.: The effect of deuterium on the growth of yeast, J. Bad., 28, 



289-294 (1934). 

 D 221 Richards, O. W.: The growth of yeast in water containing deuterium, Am. J. 



Botany, 20, 679-680 (1933). 

 D 222 Rittenberg, D., and K. Bloch: The utilization of acetic acid for fatty acid 



synthesis, /. Biol. Chem., 154, 311-312 (1944). 

 D 223 Rittenberg, D., and K. Bloch: The utilization of acetic acid for the synthesis 



of fatty acids, /. Biol. Chem., 160, 417-424 (1945). 

 D 224 Rittenberg, D., G. L. Foster, and R. Schoenheimer : Biological studies on 



amino acids with the aid of deuterium as an indicator, /. Biol. Chem. (Proc. Am. 



Soc. Biol. Chem., 32d Meeting), 123, cii (1938). 

 D 225 Rittenberg, D., A. S. Keston, R. Schoenheimer, and G. L. Foster: Deuterium 



as an indicator in the study of intermediary metabolism. XIII. The stability of 



hydrogen in amino acids, /. Biol. Chem., 125, 1-12 (1938). 

 D 226 Rittenberg, D., and R. Schoenheimer: Deuterium as an indicator in the study 



of intermediary metabolism. II. Methods, /. Biol. Chem., Ill, 169-174 (1935). 

 D 227 Rittenberg, D., and R. Schoenheimer: Deuterium as an indicator in the study 



of intermediary metabolism. VIII. The hydrogenation of fatty acids in the 



animal organism, /. Biol. Chem., 117, 485-490 (1937). 

 D 228 Rittenberg, D., and R. Schoenheimer: Deuterium as an indicator in the study 



of intermediary metabolism. XL Further studies on the biological uptake of 



deuterium into organic substances, with special reference to fat and cholesterol 



formation, /. Biol. Chem., 121, 235-253 (1937). 

 D 229 Rittenberg, D., H. Schoenheimer, and E. A. Evans, Jr.: Deuterium as an 



indicator in the study of intermediary metabolism. X. The metabolism of butyric 



and caproic acids, /. Biol. Chem., 120, 503-510 (1937). 

 D 230 Roloff, M., S. Ratner, and R. Schoenheimer: The biological conversion of 



proline and glutamic acid, J. Biol. Chem., 136, 561-562 (1940). 

 D 231 Salcedo, J., Jr., and D. Stetten, Jr.: The turnover of fatty acids in the con- 

 genially obese mouse, /. Biol. Chem., 151, 413-416 (1943). 

 D 232 Schenck, J. R., S. Simmonds, M. Cohn, C. M. Stevens, and V. du Vigneaud: 



The relation of transmethylation to anserine, /. Biol. Chem., 149, 355-359 (1943). 

 D 233 Schmidt-Nielsen, S., and K. Schmidt-Nielsen: Das Verhalten der Drosophila 



auf deuterium-oxidhaltigen Nahrboden, Kgl. norske videnskab. Selskabs, Fork., 9, 



28-30 (1936). 

 D 234 Schoenheimer, R.: Investigation of intermediary metabolism with aid of heavy 



hydrogen. Harvey Lecture, Bull. N. Y. Acad. Med., 13, 272-295 (1937). 

 D 235 Schoenheimer, R.: The use of organic compounds containing stable isotopes 



for the study of intermediary metabolism, /. Applied Phys., 12, 322-323 (1941). 

 D 236 Schoenheimer, R., and S. Ratner: The metabolism of proteins and amino acids, 



Ann. Rev. Biochem., 10, 197-220 (1941). 

 D 237 Schoenheimer, R., S. Ratner, and D. Rittenberg: Amino acid metabolism with 



isotopes as indicators, /. Biol. Chem. (Proc. Am. Soc. Biol. Chem., 33d Meeting), 



128, lxxxviii (1939). 

 D 238 Schoenheimer, R., S. Ratner, and D. Rittenberg: Studies in protein metabo- 

 lism. X. The metabolic activity of body proteins investigated with /( — )-leucine 



containing two isotopes, /. Biol. Chem., 130, 703-732 (1939). 

 D 239 Schoenheimer, R., S. Ratner, and D. Rittenberg: The process of continuous 



