[On the isolation of streptococcus mutans from human dental plaques (author's transl)].

Using morphological and biochemical criteria, it was possible for Streptococcus mutans to be isolated, in one case, from the bacterial plaques obtained from three test subjects. The colonies of this clearly identified species were characterized by a granular surface resembling frosted glass, had attached to them a shining bubble, and were seen to split mannite and sorbite in the absence of conversion of glycerol.