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In 18 papers delivered at a symposium in New York City, August 1991, chemists review recent developments in techniques to test meat, poultry, milk, and other food of animal origin, for residues of antibiotics and other drugs used for such purposes as improving feed efficiency or promoting growth. Mo

Periodontitis is an inflammatory disease of bacterial origin that results in the progressive destruction of the tissue that supports the teeth, specifically the gingiva, periodontal ligament and the alveolar bone. Evaluation of the clinical features of periodontal disease is critically important in obtaining essential information that can be used to detect the presence, determine the type and assess the severity of the disease. At the present time, the diagnosis of periodontal diseases is almost entirely based on traditional clinical assessments. Information collected during a periodontal...