The invention features primers capable of distinguishing between highly toxic and minimally toxic strains of Actinobacillus actinomycetemcomitans, methods of detecting the presence of highly toxic and minimally toxic strains of Actinobacillus actinomycetemcomitans in samples obtained from a patient...http://www.google.com/patents/US5726016?utm_source=gb-gplus-sharePatent US5726016 - Compositions and methods for diagnosis of diseases associated with actinobacillus actinomycetemcomitans infection 
