SUBJECT INDEX 



637 



Lu ng — con t in ued 



tumors of — continued 



with sulphur mustard, 255 

 urethan-induced, 200, 255 

 Luxate, 70, 71 



use of in retrograde analysis, 227 

 Lymphosarcoma in guinea pig, 254 

 Lysogeny, relationship to cancer, 268 

 Lysogenic conversion, 447, 456, 459 



Machinery, washing for sanitizing equipment, 



553 

 Macromolecular antigens, 348 

 Maize 



somatic mutation in, 421 

 variegation in, 422 

 Malaria, avian, 403 

 Maldevelopment, analysis of, 237 

 Malformations 

 clustering of, 243 



intrauterine variables related to, 243 

 mother-fetal relationship in, 241 

 pathogenic mechanisms underlying, 238 

 Malignancy and antigenic differences, 453 

 Malignization of cells in vitro, 452, 461 

 Mammalian 



hemoglobins, 299 

 immunogenetics, 347 

 radiation genetics, 127 

 Mammalian hemoglobins, 299-320 

 Mammalian radiation genetics, 127-151 

 Mammals, radiation genetic analysis of, 132 

 Mammary fat pads of mice, transplantation of 



tissues into, 565 

 Mammary gland 

 cancer, 265 



effect of pituitary hormone, 261 

 transplantation into fat pad of, 261 

 tumor, 249, 256, 260 



agent, loss of, by dilution, 267 

 virus, 262 

 Manuals and references useful in cytogenetics, 



503 

 Map, linkage, 56, 76 



distances between loci, 77 

 of the mouse, 77, 78 

 Markers, 461, 467, 468 

 chromosomal, 452 



in tumors, 446 

 drug resistance, 452, 457 

 isoantigenic, 417, 468 

 phenotypic, 459 



and studies of somatic variation, 410 

 in neoplastic cells, 448 

 in tumors, 445 

 in vivo, 460 

 Mass selection, 192 

 Mastomys, carcinoma of glandular stomach in, 



254 

 Maternal 



behavior in cocks, 278 



Maternal — continued 

 fetal 



isoimmunization, 465 



relationship resulting in malformations, 241 

 weight and teratogenesis, 242 

 Matrices 



for backcross system, 20, 21 

 for brother-sister mating, 16 

 for cross-intercross system, 26 

 Matrix 



cross-backcross-intercross system, 30 

 cycle, cross-intercross system, 25 

 G, 11, 20 

 generation, 8 



for cross-backcross-intercross system, 30, 31 

 method, 54 



sequence relative to type of, 5 

 Mating 



brother-sister, 48, 49, 53 

 double, 388 



technique of, 402 

 frequencies of types, 4, 6, 7, 11 

 gamete diagram, brother-sister, 45 

 matrix of types, 49 

 probabilities of types, 4 

 in backcross system, 18 

 in cross-backcross-intercross system, 27, 29 

 in cross-intercross system, 22 

 random, 4, 6 



systems (see Systems of breeding) 

 type frequencies, 4, 6, 7, 11 

 vector of, 8 

 Maximum-likelihood 



estimate of probability, 62 

 methods, 61 



for estimation of, 61 

 scores, 63, 65, 73, 74 

 Maze, geotactic, 292 

 Mean 



intensity index for various genotypes of coat 



color in guinea pigs, 166 

 length of heterozygous chromosomes, 22 

 quality index for genotypes of coat color in 



guinea pigs, 166 

 selection values of gene-frequency systems, 187 

 selection values of homallelic populations, 183 



with six modifiers, 184 

 superiority, 211 

 Measurement 

 labor of, 202 

 of behavior, 288 

 Mechanization of tests for behavioral patterns, 



292 

 Media 



sterilization, filter assemblies for, 506 

 synthetic, for tissue culture, 462 

 Melanin pigmentation in mammals, biochem- 

 istry of, 336 

 turbidimetric estimates of, 338 

 Melanocytes, 162 



origin of, in black and white graft, 334 



