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62 strains of Group A streptococci of different origin were cultured under comparable conditions. The supernatants of cultures of the same optical density were investigated in respect of their DNase activity. After electrophoretic separation in PAA gel, the distribution and activity of the four isoenzymes, B, D, A and C was determined. The total activity showed a near-random distribution, all patterns except B D A were found. DNase B was produced by all, DNase C by one half, DNase A by one third, and DNase D by one fifth of the strains. DNase B alone was found in three out of ten strains. The total DNase-activity and the distribution pattern in strains of the same M serotype but of different origin varied within a wide range. So a further biochemical differentiation of this strain seems to be possible.
E Tiesler, and
U Beck
August 1981,
Anales espanoles de pediatria,
E Tiesler, and
U Beck
October 1979,
Kansenshogaku zasshi. The Journal of the Japanese Association for Infectious Diseases,
E Tiesler, and
U Beck
January 1975,
Archiv fur Gynakologie,
E Tiesler, and
U Beck
December 1974,
Zentralblatt fur Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene. Erste Abteilung Originale. Reihe A: Medizinische Mikrobiologie und Parasitologie,
E Tiesler, and
U Beck
September 1975,
Tijdschrift voor diergeneeskunde,
E Tiesler, and
U Beck
September 1976,
Nordisk veterinaermedicin,
E Tiesler, and
U Beck
October 1979,
Kansenshogaku zasshi. The Journal of the Japanese Association for Infectious Diseases,
E Tiesler, and
U Beck
August 1948,
The Journal of experimental medicine,
E Tiesler, and
U Beck
October 1979,
Kansenshogaku zasshi. The Journal of the Japanese Association for Infectious Diseases,
E Tiesler, and
U Beck
December 1977,
Zeitschrift fur Immunitatsforschung. Immunobiology,
