| 摘要 |
PROBLEM TO BE SOLVED: To provide a medium capable of separately detecting Streptococcus mutans and Streptococcus sobrinus of the mutans streptococcus group which are pathogen of dental caries by distinguishing the colonies thereof by the colors. SOLUTION: A specimen obtained from the oral cavity is cultured in the chromogenic medium for detecting the cariogenic bacteria, containing aβ- glycosidase-colored substrate, a hydrogen peroxide-colored chromogen, a peroxidase and a sugar alcohol to separately detect the Streptococcus mutans and the Streptococcus sobrinus.
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