title: The oral cavity as a natural reservoir for  Streptococcus sinensis.
abstract: Using Streptococcus sinensis 16S rRNA-specific and groEL gene-specific primers, a 128-bp fragment of the 16S rRNA gene and a 433-bp fragment of the groEL gene were amplified from bacterial DNA recovered from 22 of 100 saliva samples from healthy volunteers. There was no nucleotide difference between the 88-bp 16S rRNA gene fragments from the 22 saliva samples and that of S. sinensis strain HKU4(T), but there were zero to eight nucleotide differences between the 311-bpgroEL gene fragments from the 22 samples and that of S. sinensis strain HKU4(T). The oral cavity is the natural reservoir of S. sinensis.
authors.affiliation: State Key Laboratory of Emerging Infectious Diseases, Research Centre of Infection and Immunology, Department of Microbiology, University of Hong Kong, Hong Kong, China.
authors.forename: P C Y
authors.initials: PC
authors.lastname: Woo
authors.forename: J L L
authors.initials: JL
authors.lastname: Teng
authors.forename: S N Y
authors.initials: SN
authors.lastname: Tsang
authors.forename: C W S
authors.initials: CW
authors.lastname: Tse
authors.forename: S K P
authors.initials: SK
authors.lastname: Lau
authors.forename: K-Y
authors.initials: KY
authors.lastname: Yuen