in the first instance it is recommended that the classification of an organism as a member of the genus should be based on the following criteria : gramnegative coccobacillary morphology , a g + c content for the dna of 56-58 moles % , a minimum of 90 % homology with the dna of reference strains in hybridization tests , disk electrophoretograms of acid-phenol soluble proteins of identical pattern to reference strains , a cytochrome c absorption spectrum with absorption maxima between 522-530 nm and 552-560 nm , extensive serological cross-reactions of intra-cellular antigens with those of reference strains .
C0000702
a
C0012854
dna