Patent ID: 7052860

Claim:
A method of detecting the presence or absence of A. actinomycetemcomitans or an A. actinomycetemcomitans antigen in a test sample comprising: contacting a test sample with an antibody or a fragment thereof that specifically binds to a purified immunogenic polypeptide consisting of SEQ ID NO:52, wherein the antibody or fragment thereof specifically binds A. actinomycetemcomitans or an A. actinomycetemcomitans antigen under conditions that allow formation of an immunocomplex between the antibody and the A. actinomycetemcomitans or the A. actinomycetemcomitans antigen; and detecting an immunocomplex, wherein detection of the immunocomplex indicates the presence of A. actinomycetemcomitans or an A. actinomycetemcomitans antigen in the test sample.