“…Antibody data and data from the treatment of A. actinomycetemcomitans-infected patients with adult or refractory periodontitis provide the most convincing evidence of a possible etiological role of A. actinomyceterncomitans in adult forms of periodontal disease. Thirty-six of 56 adults with destructive periodontal disease examined at multiple time periods at Forsyth Dental Center exhibited an elevated 3,56,58,68,80,119,138,193,224,242,243,245,273,349,351,353,358,380,401,402,415,428,437,442,449,464,465,467 Lower in sites of health or gingivitis and in eden- 56, 169,242,245,327,349,350, 362, 380, 442, tulous subjects 454, 467 Elevated in active lesions 80,81,437 Detected in tissues or cells from lesions 78,320 Elimination resulted in successful therapy 4,64,136,137,170,192,225,276,300,307,359,361,373,379,429,437,459 Recurrent lesions harbored...…”