1. Department of Cytokine Biology,
2. Department of Immunology, Forsyth Institute &
3. Department of Developmental Biology, Harvard School of Dental Medicine, Boston, MA 02115, and
4. Division of Aging and Geriatric Dentistry, Tohoku University Graduate School of Dentistry, Sendai, 980-8575, Japan; and
5. Michigan Dental Research Laboratory, Ann Arbor, MI 48108