Figure 1From: The cell envelope subtilisin-like proteinase is a virulence determinant for Streptococcus suisSouthern blot of S. suis P1/7 and the Tn 917 mutants. Chromosomal DNA was digested with Hind III restriction endonuclease and hybridized with a DIG-labeled probe specific for the erm gene. Lane 1, wild-type parent strain P1/7; lane 2, mutant J9G; lane 3, mutant M3G; lane 4, G6G.Back to article page