Streptococcus oralis

**Definition:** A species of gram-positive, coccoid bacteria that is numerous in the mouth and throat. It is a common cause of endocarditis and is also implicated in dental plaque formation.

**Tree numbers:** - B03.353.750.737.872.875.600 - B03.510.400.800.872.875.600 - B03.510.550.737.872.875.600