580 



BACTERIOPHAGES 



Genetic recombination, between 

 bacteriophages, 331-64 

 as taxonomic criterion, 430 

 techniques in study of, 509-1 1 

 between bacteriophages and host 



cells, 313-16, 435 

 between bacteriophages and pro- 

 phages, 315, 316 

 between prophages, 375 

 between temperate phages, 369 

 Genetic studies, of bacteriophages, 

 331-64, 433-35 

 antigenic specificity in, 116, 117 

 techniques for, 508—1 1 

 of colicinogeny, 389, 390 

 Genotype, definition, 290, 291 

 Ghost(s), of coliphage T2, 61, 200, 

 247, 252, 253, 282, 392 

 definition, 440 

 production, 37, 38, 60 

 resemblance to colicins, 387, 392 

 Glossary, 439-42 

 Glucose, in coliphages, 91, 92 



effect on colicin production, 388 

 in hydroxymethylcytosine, 307, 318, 



327 

 labeled, in study of metabolism of 

 E. coli 15T-, 241 

 Glutamic acid, in coliphages, 90 

 as growth factor for bacteriophages, 

 274, 485 

 Glutathione, effect on irradiation of 



bacteriophages, 75 

 Glycerine, effect on bacteriophages, 



53 

 Glycine, in coliphages, 90 



as growth factor for bacteriophages, 



274 

 in premature lysis of bacterio- 

 phages, 174 

 Guanine, in coliphages, 90, 91 



Gums, effect on bacteriophage ad- 

 sorption, 268 



H 



Halogens, effect on bacteriophages, 54 

 H antigens, in typhoid strains, 123 

 Heat, see Temperature 

 Heterozygosis, 344-51 

 Histidine, in coUphages, 90 

 Host-induced modification, definition. 



440 

 Host range, of bacteriophages, 122 

 mutations affecting, 129—32, 298- 

 301, 306, 316, 318, 369, 404, 

 406, 501-3 

 phenotypic modification, 132-35, 

 291-93, 296, 297, 317, 403, 406, 

 412, 418 

 as taxonomic criterion, 431, 432 

 of colicins, 385 

 definition, 440 



oiS. typhi phage Vi H, 399, 403, 

 405-7, 41 1 

 Hydrogen peroxide, effect on bacterio- 

 phage adsorption, 268 

 effect on coliphage SI 3, 54 

 effect on coliphages T2 and T4, 39 

 in inactivation of bacteriophages, 75 

 Hydrogen sulfide, effect on inacti- 

 vated bacteriophage, 54 

 Hydroxymethylcytosine, in coli- 

 phages T2, T4, and T6, 33, 

 236, 240, 241, 254, 259, 275- 

 77, 280, 307 

 as taxonomic criterion for bacterio- 

 phages, 426 

 5-(Hydroxymethyl)cytosine, in coli- 

 phages, 91 

 8-Hydroxyquinoline, effect on 

 bacteriophages, 271 



