426 



SUBJECT INDEX 



Triton-soluble lipoprotein, 



modification by snake venom, 



80-85, 87 

 properties of, 77-80 

 Trophoblast, as immunological 

 barrier, 134-135 

 containing antigens, 120, 130, 132, 



133 

 Trypsin, effect on tumour trans- 

 plantation, 183 

 in preparation of antigens, 27 

 Tuberculin sensitivity, 272-273, 277- 



278, 283-284 

 Tumour cells, immunogenetic 



changes in, 167, 169-173 

 Tumour metastasis, effect of cortisone, 

 168, 169 

 produced in radiation chimeras, 

 164-169 

 Tumour tissue, compared with em- 

 bryonic tissue, 288-289, 321 

 preparation of antisera from, 292 

 Tumour transplantation, effect of 

 trypsin, 183 

 enhancement and, 288, 289 

 formation of homograft reaction 



against, 163-164 

 haemagglutinin response in, 179, 



181 

 homograft reaction in, 173, 176 

 humoral antibodies and, 179 



Tumour transplantation, 



immunogenetic changes in cells, 



167, 169-173 

 in radiation chimeras, 163-184 

 loss of strain-specificity, 175-178 

 properties of adapted tumour, 173- 



role of lymphoid tissue, 1 80-1 81 

 suppression of antigen production, 

 176, 180 

 Tumours, development in thymecto- 

 mized animals, 402-403 

 effect of matings on resistance to, 

 124 

 Tween 80, 



effect on antigens, 23 



Ultrasonics, effect on H-2 antigens, 



54, 69, 70 

 Ultraviolet irradiation, sterihzation 



with, 53-54 

 Unresponsiveness, induction of in 



adults, 1 40-141 



Vascular anastomosis, 20 



Weight-gain assay, in runt disease, 

 246-251, 266, 351, 361, 362, 368, 



372 



X-factor, I 



Printed by Spottiswoode, Ballantyne & Co. Ltd., London and Colchester 



