490 



INDEX 



Lung, lesions due to infections (see pneumonic 

 lesions) 

 metastasis of tumors to, 212 

 nematodes in, 367 

 papillary adenocarcinoma, 210 

 protozoan infection in, 356 

 tumors of, 208 

 Lung tumors, dominant nature, 262 

 genetics of, 263 



hormonal influence absent, 264 

 incidence in reciprocal cross, 264 

 metastasis of, 211 

 Lutein cells, 153 

 Lymph nodes, 95 



enlarged in mouse arthritis, 401 

 lesions in pseudotuberculosis, 394 

 protozoan infection in, 356 

 Lymph nodules, aggregate, 122 



solitary, 122 

 Lymph organs, tumors of, 212 

 Lymphangio-endothelioma, 208 



of liver, 220 

 Lymphangioma, 194, 202 

 Lymphatic vessels, 91 

 Lymphoblastoma, 215 

 Lymphocytes, 92 



tumors of, 215 

 Lymphocytic choriomeningitis, 438 

 diagnosis, 442 

 in laboratory mice, 438 

 in wild house mice, 438 

 properties of the virus, 441 

 the experimental disease, 439 

 the natural disease, 439 

 Lymphocytoma, 215 

 Lymphosarcoma, 216 



more frequent in females, 312 



M 



MacDowell-Bagg albino strain, blood count 



in, 93 



ovulation in, 76 



vaginal smear in, 69 



vertebral variation in, 336 

 Macrophages, 96 



Malignancy of tumors in mice, 168 

 Malpighian bodies, 97 

 Mammary glands, 158 



changes during estrous cycle, 75 



in pseudopregnancy, 79 



Mammary glands, development induced by 

 nursing, 81 



extent of, 175 



grovk'th following ovariectomy, 311 



histology, 158 



involution, 162 



retarded by irritation, 81 



of lactation, 160 



of pregnancy, 159 



of puberty, 159 



regressing, 161 



resting, 162 



spirochetes in, 431 

 Mammary region, epithelial tumors of, 176 



non-epithelial tumors of, 193 



tumors of, 174 

 Mammary tumors, 174 



adeno-acanthoma, 190 



adenocarcinoma, 182 

 variable, 183 



adenofibroma, 182 



adenoma, 176 



carcinoma simplex, 190 



carcinosarcoma, 192 



dominant inheritance, 251 



endocrine influence on, 259, 311 



epithelial pearls in, i8g 



fibro-adenoma, 181 



genetics of, 259 



hemorrhagic cyst adenocarcinoma, 189 



in feminized males, 312 



in male mice, 311 



in ovariectomized females, 311 



influence of milk on, 257, 321 



intracanalicular adenocarcinoma, 187 



macroglandular adenocarcinoma, 188 



papillary cyst adenocarcinoma, 185 

 adenoma, 180 



polylocular cyst adenoma, 179 



simple adenocarcinoma, 182 

 adenoma, 177 



transplantation of, 280 

 Marrow (see bone marrow) 

 Marsh strain, arthritis in, 400 

 Mast cells, 96 

 Maternal environment, 331 

 Maturation of egg, 77 

 Maturity, age at, 58 

 Meal worms, eradication, 377 

 Medulloblastoma, of brain, 228 

 Megakaryocyte, 95 



