[Comparative study of the physicochemical and biological properties of Bacillus thuringiensis phages]

Two phages of the polylysogenic Bacillus thuringiensis subsp. galleriae 1-97 culture differ in the morphology of their particles. A comparative study of their antigenic properties has shown the possibility of cross serological reactions of neutralization with antiphagal sera. The results imply that there is an antigenic relationship between these phages. The data indicate that the nucleic acid component of the both phages is DNA. The sensitivity of phage 1-97 A to some physical factors has been studied.