Enterocinogeny and Lysogeny in Enterococci

Abstract

Summary. The enterocinogeny and lysogeny of enterococci was studied with a double layer agar method and 21 indicator strains of enterococci. Of 77 strains examined, 76 produced enterocine, and of 19 strains examined, 5 were sensitive to their own enterocine. All 77 strains were lysogenic when cultures killed with chloroform were examined for lysogeny by the method of Liegeois‐Müller & Fredericq (1952). By the same method, 4 of 7 strains were found to produce phages active against themselves.