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16S rDNA sequence variations of some Streptococcus suis serotypes

Danish Veterinary Laboratory, Department of Microbiology, Bülowsvej 27, 1790 Kbh V. Denmark

Author for correspondence: Lars O. Andresen. Fax: +45 3530 0120. e-mail: loa{at}svs.dk

ABSTRACT

Streptococcus suis 16S rDNA from selected serotypes has been sequenced and compared with the 16S rDNA sequences from serotypes 1 and 2 present in GenBank. After alignment the sequenced serotypes show clusters of variation. Based on these clusters, a limited phylogenetic tree showing the relationships of all of the serotypes was constructed.

Key Words: Streptococcus suis • serotypes • sequencing • 16S rDNA • phylogenetic tree

The GenBank accession numbers for the 165 rDNA sequences of the serotypes are: 9, AF014814; 20, AF014815; 22, AF014816; 24, AF014817; 25, AF014818; 26, AF014819; 27, AF014820.