IXDEX 



489 



Infectious diseases, transmission by mites, 



375 

 virus pneumonia, 448 

 Infiltration, tumor growth by, 169 

 Inheritance (see genetics) 

 Inner cell mass, 5 



Interlocking, tumor growth by, 169 

 Interstitial cells of Leydig, 135 

 Intestinal portal, anterior, 27 

 Intestine, carcinoma of, 219 



fibrosarcoma of, 219 



hemangioma of, 219 



large, 122 



nematodes in, 365, 369 



polyp of, 219 



protozoan infections in, 350, 352, 354 



small, 120 



tapeworms in, 360 

 Inversion of germ layers, 10 

 reversed, 28 



J 



Japanese waltzing mice. Bacillus piriformis 

 infection in, 416 

 spleen transplants in, 286 

 tumor transplants in, 280 



Jejunum, 121 



K 



Kidneys, 130 



lesions in pseudotuberculosis, 395 

 protozoan infection in, 355 

 tumors of, 221 



Klebsiella pneumoniae, 411 



Klossiella muris, 355 



control measures, 358 



Kupffer, cells of, 125 



Lacrimal glands, exorbital, 108 



intraorbital, 109 

 Lactation, 81 



corpora lutea of, 81, 154 

 mammary glands of, 160 

 Lactation interval, 81 

 Langerhan's islands, 126 

 carcinoma of, 221 

 Larynx, 127 



Lateral mesoderm, 29 



Leaden strain (see C57 leaden) 



Leg lesions, in infectious ectromclia, 435 



in mouse arthritis, 400 

 Legs, paralysis of, 443 

 Leiomyosarcoma, of uterus, 227 

 Leptopsylla musculi, 371 

 Leptospira icterohemorrhagiae , 433 

 Leptospirosis, 431 

 Leukemia, 214 



genetics of, 270 



immunization to transplanted, 291 



in reciprocal crosses, 2 7 1 



transplantation of, 290 

 Leukocytes, 92 



in vaginal smears, 68 

 Leukocytosis in lymphocytic choriomenin- 

 gitis, 441 

 Leukopenia, due to Bacterium influenzae 

 murium, 411 



in mouse typhoid, 382 

 Lice, 370 



as transmitting agents, 371 



eradication of, 371 

 Life, length of, 59 

 Lingual glands, 112 

 Linkage, 234 



data, negative, 244 



effect in inbreeding, 329 



groups, 243 

 Lipoid tumors, in yellow mice, 269 

 Lipoma, 194, 200 

 Liponyssus bacoti, 374 

 Liposarcoma, 204 

 Lips, no 



epidermoid carcinoma of, 196 



papilloma of, 195 

 Litter size, 56 

 Liver, 124 



inclusion bodies in, 452 



lesions of (see hepatic lesions) 



nematodes in, 369 



tapeworms in, 360 



tumors caused by tapeworms, 360 



tumors of, 219 

 Longistriata musculi, 367 

 Lung, 128 



adenocarcinoma of, 209 



adenoma of, 209 



carcinoma simplex, 210 



