The frequency of fim genes among Salmonella serovars

摘要: Abstract Salmonella serovars were examined for the presence of fim gene sequences using specific DNA probes. All strains, regardless their ability to express surface-associated fimbriae, retain a considerable amount homologous probes used. The phenotypically non-fimbriate FIRN and non-FIRN strains S. typhimurium detectable amounts and, therefore, may not be genotypically non-fimbriate. MS adhesin can expressed by type 2 fimbriate bacteria when they are transformed with discrete regions cluster. However, this conversion hemagglutinating phenotype is associated small region DNA. Therefore, inability fimbria-producing mediate hemagglutination does appear due deletion in single gene.