title: [Physico-chemical properties of CELO virus strains isolated in Bulgaria].
abstract: Studied were some physico-chemical properties of four CELO virus strains isolated in Bulgaria. Their behaviour to ether, chloroform and 25 per cent trypsin, and their state at 56 degrees C and at pH 3, 0 were determined through their infectious titer as obtained on 9--10-day old chicken embryos. It was found that the size of the investigated viruses is within the range of 50 to 100 mmu, they belong to the DNA-possessing group, are resistant at 56 degrees C and at pH EQUALS 3,0. They are not sensitive to ether, chloroform and trypsin. Their physico-chemical properties are fully comparable with those of the avian adenoviruses-CELO.
mesh_terms: D000256:Adenoviridae; D000818:Animals; D000259:Aviadenovirus / Q000187:drug effects / Q000472:pathogenicity; D002031:Bulgaria; D002384:Catalysis; D002642:Chick Embryo; D002725:Chloroform / Q000494:pharmacology; D004986:Ether / Q000494:pharmacology; D006863:Hydrogen-Ion Concentration; D013045:Species Specificity; D014357:Trypsin; D014774:Virulence / Q000187:drug effects
chemical_list: D004986:Ether; D002725:Chloroform; D014357:Trypsin
vernacular_title: Fiziko-khimichni svoĭstva na CELO-virusni shtamove, izolirani u nas