1. Departments of Pharmacology and Toxicology and Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York 14642
2. Laboratory of Microbiology and Immunology, National Institute of Dental Research, Bethesda, Maryland 20014
3. University of California School of Dentistry, San Francisco 94122
4. University of Rochester School of Medicine and Dentistry
5. Laboratory of Microbiology and Immunology, National Institute of Dental Research