[Thermo- and acid-stability of the infectious properties of strains of Newcastle disease virus isolated in Bulgaria].
D000818:Animals; D002031:Bulgaria; D002642:Chick Embryo; D006358:Hot Temperature; D006863:Hydrogen-Ion Concentration; D009522:Newcastle disease virus / Q000302:isolation & purification / Q000472:pathogenicity; D013045:Species Specificity; D014774:Virulence
Termo- i kiselinostabilnost na infektsioznite svoistva na shtamove psevdochumen virus, izolirani u nas