SUBJECT INDEX 



583 



mutations affecting, 369, 371 

 in type-determination by typing 

 phages, 408-12, 415, 416, 418 

 Lysogeny, 8-11, 365-80; see also 

 Temperate phages 

 criteria, 10, 11 

 definition, 2, 6, 8, 365 

 and origin of bacteriophages, 7, 8 

 Lysozyme, effect on neutralization 

 of bacteriophages, 1 1 2 

 in induction of lysis, 20 

 Lytic enzyme, in bacteriophages, 25, 

 307 



M 



Magnesium ion, effect on adsorption 

 of bacteriophages, 235, 269 

 effect on heat inactivation of coli- 



phages, 58, 59 

 effect on infected bacteria, 166 

 effect on premature lysis, 165 

 effect on stability of bacteriophages, 



454, 458 

 effect on superinfection breakdown, 

 214, 215 

 Malachite green, effect on bacterio- 

 phage reproduction, 286 

 Maltase, in coliphage WLL, 238 

 Marker rescue, see Cross-reactivation 

 Maturation, definition, 441 

 Media, for bacterial hosts, 446, 447 

 for bacteriophages, 445, 446, 507 

 Megacinogenic bacteria, 391 

 Megacins, 382, 391 

 Mercuric ion, effect on bacterio- 

 phages, 53, 54 

 Methionine, in coliphages, 90, 208 

 effect on bacteriophage reproduc- 

 tion, 275 

 as growth factor for bacterio- 

 phages, 277 

 Methionine sulfoxide, effect on bac- 



teriophage reproduction, 274, 

 485 

 Methioprim, effect on bacteriophage 



reproduction, 276 

 Methylene blue, photodynamic action 

 on bacteriophages, 64, 65, 286 

 5-Methyltryptophan, effect on 



bacteriophage reproduction, 

 274, 275, 485 

 in premature lysis of bacteriophage, 

 174, 521 

 Micrococcus aurentiacus, sensitivity to 



megacin, 391 

 Micrococcus cinnabareus, sensitivity to 



megacin, 391 

 Micrococcus species, 121 

 Mixed indicator(s), definition, 441 



techniques for use, 495-501 

 Mixed infection, definition, 440 

 effect on bacteriophage reproduc- 

 tion, 295, 307, 308, 319-30 

 in studies of bacteriophage genetics, 



331-58,362-64,371, 508-11 

 as taxonomic criterion for bacterio- 

 phages, 429-31 

 techniques in study of, 332, 333, 

 498-501, 508-11 

 Monovalent phage, definition, 122 

 Morphology, of bacteriophages, 35- 

 41, 164, 182-86 

 as taxonomic criterion, 424, 426, 

 431 

 of infected bacteria, 190-97, 203 

 Multiple infection, definition, 441 

 Multiplicity of infection, definition, 

 441,470 

 effect on lysis, 191 

 effect on lysogenization, 370 

 Multiplicity reactivation, definition, 

 441 

 of ultraviolet-inactivated bacterio- 

 phage, 73, 357-61, 364 

 as taxonomic criterion, 428 



