THE ROLE OF RIBONUCLEIC ACID AND SULFHYDRIL GROUPS 275 



Yamada, T., 1958a. "Induction of Specific Differentiation by Samples of Proteins 



and Nucleoproteins in the Isolated Ectoderm of Tritums Gastrulae," Experien- 



tia 14, 81. 

 Yamada, T., 1958b. 'Embryonic Induction," in McElroy, W., and Glass, B., eds., 



The Chemical Basis of Development ( Baltimore, Johns Hopkins Press ) . 

 Yamada, T., and Takata, K., 1955a. "Effect of Trypsin and Chromotrypsin on the 



Inducing AbiHty of the Kidney and its Fractions," Exp. Cell Res., Suppl. 3, 



402. 

 Yamada, T., and Takata, K., 1955b. "An Analysis of Spino-Caudal Induction by 



the Guinea Pig Kidney in the Isolated Ectoderm of the Tritums Gastrula," 



/. Exp. Zool. 128, 291. 



