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148. Spies, T. D., Lopez, G. G., Stone, R. E., Milanes, F., Brandenberg, R. 0., and 



Aramburu. T., Blood, 3, 121-6 (1948). 



149. Kidder, G. W., and Dewey, V. C, Proc Natl. Acad. Sci. U. S., 33, 95-102 (1947). 

 149a. Olson, O. E., Fager, E. E. C, Burris, R. H., and Elvehjem, C. A., J. Biol. 



Chem., 174, 319-26 (1948). 



150. Lucas, H. L, Norris, L. C., and Heuser, G. F., Poultry Sci., 25, 373-5 (1946). 



151. Jukes, T. H., Oleson, J. J., and Dombush, A. C., J. Nutrition, 30, 219-23 (1945). 



152. Woolley, D. W, J. Biol. Chem., 147, 581-92 (1943). 



153. Woolley, D. W., /. Biol. Chem., 139, 29-34 (1941). 



154. Walker, R., and Nelson, E. M., Am. J. Physiol, 103, 25-9 (1933). 



155. Ness, H. T., Price, E. L., and Parsons, H. T., Science, 103, 98-9 (1946). 



155a. Everson, G., Wheeler, E., Walker, H., and Caulfield, W. J., J. Nutrition, 35, 

 209-23 (1948). 



156. Green, R. G., Carlson, W. E., and Evans, C. A., J. Nutrition, 23, 165-74 (1942). 



157. Sealock, R. R., Livermore, A. H., and Evans, C. A., J. Am. Chem. Soc, 65, 935- 



40 (1943). 



158. Smith, D. C., and Proutt, L. M., Proc. Soc. Exptl. Biol. Med., 56, 1-3 (1944). 



159. Krampitz, L. O., and Woolley, D. W., J. Biol Chem., 152, 9-17 (1944). 

 159a. Sealock, R. R., and Davis, N. C, J. Biol. Chem., 177, 987-8 (1949). 



160. Bateman, W. G., J. Biol. Chem., 26, 263-91 (1916). 



161. Boas, M. A., Biochem. J., 21, 712-24 (1927). 



162. Eakin, R. E., Snell, E. E., and Williams, R. J., J. Biol. Chem., 140, 535-43 



(1941). 



163. Eakin, R. E., McKinley, W. A., and Williams, R. J., Science, 92, 224-5 (1940). 



164. Eakin, R. E., Snell, E. E., and Williams, R. J., J. Biol. Chem., 136, 801-2 (1940) 



165. Hertz, R., Physiol. Revs., 26, 479-94 (1946). 



166. Alibrandi, A., Arch, fisiol, 44, 163-79 (1945). 



167. Dann, W. J., Federation Proc, 3, 159-61 (1944). 



168. Woolley, D. W., J. Biol. Chem., 162, 179-80 (1946). 



169. Kodicek, E., Carpenter, K. J., and Harris, L. J., Lancet, 251, 491-2 (1946). 



170. Rosen, F., and Perlzweig, W. A., Arch. Biochem., 15, 111-14 (1947). 



171. Krehl, W. A., Carvalho, A, and Cowgill, G. R., Federation Proc, 6, 413 (1947). 



172. Sarett, H. P., and Goldsmith, G. A., Federation Proc, 6, 288 (1947). 



173. Bhagvat, K., and Devi, P., Indian J. Med. Research, 32, 131-7 (1944). 



174. Weswig, P. H., Freed, A. M., and Haag, J. R., J. Biol. Chem., 165, 737-8 (1946). 



175. Raska, S. B., Science, 105, 126-7 (1947). 



176. Emerson, G. A., Wurtz, E., and Johnson, O. H., J. Biol. Chem., 160, 165-7 (1945). 



177. Moore, D. F., J. Trop. Med. Hyg., 45, 129-31 (1942). 



178. Briggs, G. M., Jr., Mills, R. C, Elvehjem, C. A., and Hart, E. B., Proc. Soc 



Exptl. Biol. Med., 51, 59-61 (1942). 



179. Mellanby, E., Brit. Med. J., 2, 885 (1946). 



180. Najjar, V. A., and Barrett, R., Vitamins and Hormones, 3, 23-48 (1945). 



181. Nutrition Revs., 4, 76-8 (1946). 



182. Evenson, A., McCoy, E., Geyer, B. R, and Elvehjem, C. A., /. Bad., 51, 513-21 



(1945). 

 182a. Gall, L. S., Illingworth, B. A., Cowgill, G. R., and Fenton, P. F., J. Nutrition, 

 35, 27-38 (1948). 



183. Roscoe, M. H., Hyg., 27, 103-7 (1927). 



184. Johnson, B. C, Wiese, A. C, Mitchell, H. H., and Nevens, W. B, J. Biol. 



Chem., 167, 729-36 (1947). 



185. Nutrition Revs., 3, 81-2 (1945). 



186. Daft, F. S., and Sebrell, W. H., Vitamins and Hormones, 3, 49-72 (1945). 



187. Friedman, H., J. Nutrition, 12, 165-72 (1936). 



188. Taylor, A., Pennington, D., and Thacker, J., Univ. Texas Pub., 4237, pp. 135-44 



(1942). 



189. Glimstedt, G., Skand. Arch. Physiol, 73, 48-62 (1936). 



190. Reyniers, J. A., Trexler, P. C, and Ervin, R. F., Lobund Rept., 1, 1-120 (1946). 



191. Wright, L. D., Cresson, E. L., Skeggs, H. R., Wood, T. R., Peck, R. L., Wolf, 



D. E, and Folkers, K., J. Am. Chem. Soc, 72, 1048 (1950). 



