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Managanese-containing superoxide dismutase and NADH oxidase could be detected in all of the 23 strains belonging to different species or serotypes of the genus Streptococcus. NADH peroxidase activity was found in 7 strains. Pyruvate oxidase activity was only detectable in Streptococcus faecalis.
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Zitzelsberger et al. (1984) studied this question.
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