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. Author manuscript; available in PMC: 2019 Oct 1.
Published in final edited form as: Mol Oral Microbiol. 2018 Jul 15;33(5):337–352. doi: 10.1111/omi.12231

Fig. 1:

Fig. 1:

Comparison of H2O2 production by S. oralis ssp. tigurinus J22, S. infantis LZ2, S. mitis 12261, and S. cristatus wild type strains and their respective isogenic spxB mutants. H2O2 production from all strains was assessed on H2O2 indicator plates after overnight incubation at 37ºC aerobically. H2O2 production leads to the precipitation of Prussian blue during aerobic growth, which forms a blue halo around the producer 47,48.