the genomic relatedness among 28 catalase-positive campylobacter strains was assessed by determination of dna base composition , by dna : dna hybridization followed by s1 endonuclease digestion of single-stranded dna , and by determining the thermal stability of homologous and heterologous double-stranded dna .
C0012935
single-stranded dna
C0012854
double-stranded dna