Abstract
On the basis of the 16S rRNA sequence data analysis among the closely related species, the specific primers for Cytophaga psychrophila were constructed. The specificity in amplifying the 16S rRNA of C. psychrophila was confirmed by using some selected strains of the related species. In addition, it was revealed that these specific primers distinguished C. psychrophila from other principal fish pathogens. The present PCR technique is expected to be a powerful tool for the diagnosis of cold-water disease.
