174 



Template code, 5 1 

 Thyroid gland, 80 

 Thyroxin, 81, 84 

 Tinbergen, N., 131 

 Tolerance, 92 

 Tools, 138 

 Transforming factors, 54 



Vaccines, 87 



Virus, 67 



Virus particles, 19, 68 



Virus, sizes of 19 



Virus theory of cancer, 96 



Vitamins, 28 



Vitamin A, in vision, 116 



Inside the Living Cell 



Vitamin B12, 37 



Warburg, O. H., 97 

 Wald, G., 116 

 Watson, J. B., 24 

 Watson, J. D., 42 

 Weiss, P., 77 

 Wigglesworth, V. B., 78 

 Wyckoff, R. W. G., 70 



Xanthine oxidase, 37 

 X-rays, carcinogenicity of, 61 

 X-rays, effects of, 58 



Young, J.Z., 124 



r 



