title: [EXPERIMENTAL VARIABILITY OF NEWCASTLE DISEASE VIRUSES].
mesh_terms: D000818:Animals; D001921:Brain; D004798:Enzymes; D006168:Guinea Pigs; D009521:Newcastle Disease; D009522:Newcastle disease virus; D012106:Research; D046509:Tissue Culture Techniques; D014776:Virus Cultivation
chemical_list: D004798:Enzymes
keywords: BRAIN; ENZYMES; EXPERIMENTAL LAB STUDY; GUINEA PIGS; NEWCASTLE DISEASE VIRUS; TISSUE CULTURE; VIRUS CULTIVATION
vernacular_title: EKSPERIMENTAL'NAIA IZMENCHIVOST' VIRUSA N'IUKASLSKO I BOLEZNI.