424 



SUBJECT INDEX 



Recombination 



interpretation 



heterozygosis and, 294-295 

 multiplication nature and, 297-299 

 virulence and, 295-297 



nonviable "parent" and, 288-289 



polio virus and, 301-302 



psittacosis virus, 302 



rabbitpox virus and, 299-301 



vaccinia virus and, 299-301 

 Red cells, see Erythrocytes 

 Ehinocoris annulatus, polyhedral virus 



and, 390 

 Ribonuclease, influenza virus multiplica- 

 tion inhibition and, 276 

 Ribonucleic acid, 141, 152, 153, 207, 208, 

 211,212,213,216,283,304 



arboviruses and, 12 



enteroviruses and, 6, 9, 12 



myxovirus and, 5, 8, 9 



psittacosis viruses and, 2, 4, 12 



western equine encephalomyelitis virus 

 and, 6 

 Ribosyl-benzimidazole derivative, influ- 

 enza virus production and, 12 

 Rickettsiae, 2, 3^, 10, 119, 128 

 Rickettsia burneti 



chick fibroblast cultures and, 72 



chick heart cultures and, 72 

 Rickettsia mooseri, electron microscopy, 



yolk sac and, 72 

 Rickettsia rickettsii, rat fibroblasts and, 72 

 Rickettsia tsutsagamushi, rat fibroblasts 



and, 72 

 Rift Valley fever virus 



autointerference and, 168, 169 



inactivated Rift Valley fever virus, 

 interference between, 171 



incomplete virus and, 151 



yellow fever virus, interference between, 

 163 

 Rinderpest virus, egg-adapted rinderpest 



virus, interference between, 167 

 Rous sarcoma virus 



adaptation of, 319-320 



assay of, 322-326 



chickens, 65, 96, 103, 105 



biological properties and, 319-327 

 electron microscopy and, 97-98 

 host-virus relationships and, 315-319 



tissue culture and, 96-97 

 virus localization and, 98-99 



coexistence and, 234 



hydrocortisone and, 317 



lag period, recoverable infective virus 

 and, 116, 120 



masking and, 321-322 



multiplication of, 322-326 



purification of, 326-327 



variation in, 319-320 



Xerosin and, 317-318 

 Rubella, 7 

 Russian far eastern encephalitis virus, 



hemagglutination and, 40 

 Russian spring-summer encephalitis virus, 



2, 6-diaminopurine and, 218 



Santigen, see Soluble antigen 



Secretions, normal cell, virus release and, 



67-68 

 Semliki Forest encephalitis virus, hemag- 

 glutination and, 40 

 Sendai virus, see Influenza D virus 

 Serological reagents, serological variation 



and, 252-253 

 Serological types, influenza viruses and, 



257 

 Serological variation 

 arboviruses 



strain relationships and, 269 

 successive exposure and, 269-270 

 influenza viruses 



adaptation to new hosts and, 265-267 

 during passage and, 265-269 

 induced and, 267 

 phase and, 267-269 

 serological types and, 254 

 Type A strains and, 254-265 

 Type B strains and, 265 

 viral structure and, 253-254 

 reagents and, 252-253 

 Serum, immune, viral eclipse phase and, 16 

 Serum mucoprotein, see Mucoprotein 

 Sheep dermatitis virus, Shope papilloma 



virus, interference between, 167 

 Sheep submaxillary gland mucoprotein, 



see Mucoprotein 

 Shope fibroma virus, 13 



electron microscopy and, 80, 102, 105 



