31. The spit was collected in a cup and analyzed for mutans streptococci , a virulent bacteria that causes tooth decay. 32. "Streptococcus agalactiae " is the species designation for streptococci belonging to group B of the Lancefield classification. 33. "A . haemolyticum " often occurs in polymicrobic infections together with typical respiratory pathogens such as streptococci . 34. The mucous membranes found in the nose and throat are primary sites for infection and transmission of group A streptococci . 35. In addition to strict anaerobic bacteria, microaerophilic streptococci and " Streptococcus salivarius " can also be present. 36. Time is of the essence in treating toxic shock syndrome, especially when it is caused by flesh-eating streptococci . 37. Robert Staat of the University of Louisville's school of dentistry has also found oral streptococci in dental unit waterlines. 38. He has genetically modified the mutans streptococci bacteria, creating a harmless strain capable of vanquishing the variety that destroys teeth. 39. The rapid pyrrolidonyl arylamidase ( PYR ) test is used for the presumptive identification of group A beta-hemolytic streptococci . 40. Menthol is widely used in dental care as a topical antibacterial agent, effective against several types of streptococci and lactobacilli.
