ROGENE F. HENDERSON (Chair),

Lovelace Biomedical and Environmental Research Institute, Albuquerque,New Mexico

CHARLES E. FEIGLEY,

University of South Carolina, Columbia, South Carolina

DAVID W. GAYLOR,

U.S. Food and Drug Administration, Jefferson, Arkansas

GÜNTER OBERDÖRSTER,

University of Rochester, Rochester, New York

KULBIR S. BAKSHI, Program Director for the Committee on Toxicology

SUSAN N.J. PANG, Project Director

RUTH E. CROSSGROVE, Editor

LINDA V. LEONARD, Senior Program Assistant

ROGENE F. HENDERSON (Chair),

Lovelace Biomedical and Environmental Research Institute, Albuquerque,New Mexico

GERMAINE M. BUCK,

State University at Buffalo, Buffalo, New York

GARY P. CARLSON,

Purdue University, West Lafayette, Indiana

JACK H. DEAN,

Sanofi Research, Malverne, Pennsylvania

KEVIN E. DRISCOLL,

The Procter and Gamble Company, Cincinnati, Ohio

CHARLES E. FEIGLEY,

University of South Carolina, Columbia, South Carolina

PAUL M.D. FOSTER,

Chemical Industry Institute of Toxicology, Research Triangle Park,North Carolina

DAVID W. GAYLOR,

U.S. Food and Drug Administration, Jefferson, Arkansas

JOHN C. GERHART,

University of California, Berkeley, California

JUDITH A. GRAHAM,

U.S. Environmental Protection Agency, Research Triangle Park, NorthCarolina

IAN A. GREAVES,

University of Minnesota, Minneapolis, Minnesota

SIDNEY GREEN,

Covance Laboratories, Inc., Vienna, Virginia

WILLIAM E. HALPERIN,

National Institute for Occupational Safety and Health, Atlanta, Georgia

FLORENCE K. KINOSHITA,

Hercules Incorporated, Wilmington, Delaware

DANIEL KREWSKI,

University of Ottawa, Ottawa, Ontario

THOMAS E. MCKONE,

University of California, Berkeley, California

MICHELE A. MEDINSKY,

Chemical Industry Institute of Toxicology, Research Triangle Park,North Carolina

GÜNTER OBERDÖRSTER,

University of Rochester, Rochester, New York

JOHN L. O'DONOGHUE,

Eastman Kodak Company, Rochester, New York

GEORGE M. RUSCH,

AlliedSignal, Inc., Morristown, New Jersey

MARY E. VORE,

University of Kentucky, Lexington, Kentucky

BERNARD M. WAGNER, Consultant,

Short Hills, New Jersey

ANNETTA P. WATSON,

Oak Ridge National Laboratory, Oak Ridge, Tennessee

KULBIR S. BAKSHI, Program Director

SUSAN N.J. PANG, Research Associate

ABIGAIL STACK, Research Associate

RUTH E. CROSSGROVE, Production Manager

KATHRINE IVERSON, Manager of the Toxicology Information Center

CATHERINE M. KUBIK, Senior Program Assistant

LINDA V. LEONARD, Senior Program Assistant

LUCY V. FUSCO, Project Assistant

GORDON ORIANS (Chair),

University of Washington, Seattle, Washington

DONALD MATTISON (Vice Chair),

University of Pittsburgh, Pittsburgh, Pennsylvania

MAY R. BERENBAUM,

University of Illinois, Urbana, Illinois

EULA BINGHAM,

University of Cincinnati, incinnati, Ohio

PAUL BUSCH,

Malcolm Pirnie, Inc., White Plains, New York

GEORGE P. DASTON,

The Procter and Gamble ompany, Cincinnati, Ohio

PETER L. DEFUR,

Virginia Commonwealth University, Richmond, Virginia

DAVID L. EATON,

University of Washington, Seattle, Washington

ROBERT A. FROSCH,

Harvard University, Cambridge, Massachusetts

MARK HARWELL,

University of Miami, Miami, Florida

BARBARA HULKA,

University of North Carolina, Chapel Hill, North Carolina

DANIEL KREWSKI,

University of Ottawa, Ottawa, Ontario

RAYMOND C. LOEHR,

University of Texas, Austin, Texas

JAMES A. MACMAHON,

Utah State University, Logan, Utah

MARIO J. MOLINA,

Massachusetts Institute of Technology, Cambridge, Massachusetts

WARREN MUIR,

Hampshire Research Institute, Alexandria, Virginia

GEOFFREY PLACE,

Hilton Head, South Carolina

MARGARET N. STRAND,

Bayh, Connaughton and Malone, Washington, D.C.

BAILUS WALKER, JR.,

Howard University, Washington, D.C.

DIANA WALL,

Colorado State University, Ft. Collins, Colorado

GERALD N. WOGAN,

Massachusetts Institute of Technology, Cambridge, Massachusetts

TERRY F. YOSIE,

Ruder Finn, Inc., Washington, D.C.

JAMES J. REISA, Director

DAVID J. POLICANSKY, Associate Director and Program Director for Applied Ecology

CAROL A. MACZKA, Program Director for Toxicology and Risk Assessment

LEE R. PAULSON, Program Director for Resource Management

RAYMOND A. WASSEL, Program Director for Environmental Sciences and Engineering

KULBIRS. BAKSHI, Program Director for the Committee on Toxicology

JAMIE YOUNG, Assistant to the Director

THOMAS D. POLLARD (Chair),

The Salk Institute, La Jolla, California

FREDERICK R. ANDERSON,

Cadwalader, Wickersham & Taft, Washington, DC.

JOHN C. BAILAR III,

University of Chicago, Chicago, Illinois

PAUL BERG,

Stanford University School of Medicine, Stanford, California

JOANNA BURGER,

Rutgers University, Piscataway, New Jersey

SHARON L. DUNWOODY,

University of Wisconsin, Madison, Wisconsin

JOHN L. EMMERSON,

Portland, Oregon

NEAL L. FIRST,

University of Wisconsin, Madison, Wisconsin

URSULA W. GOODENOUGH,

Washington University, St. Louis, Missouri

HENRY W. HEIKKINEN,

University of Northern Colorado, Greeley, Colorado

HANS J. KENDE,

Michigan State University, East Lansing, Michigan

CYNTHIA J. KENYON,

University of California, San Francisco, California

DAVID M. LIVINGSTON,

Dana-Farber Cancer Institute, Boston, Massachusetts

THOMAS E. LOVEJOY,

Smithsonian Institution, Washington, D.C.

DONALD R. MATTISON,

University of Pittsburgh, Pittsburgh, Pennsylvania

JOSEPH E. MURRAY,

Wellesley Hills, Massachusetts

EDWARD E. PENHOET,

Chiron Corporation, meryville, California

MALCOLM C. PIKE,

University of Southern California, Los Angeles, California

JONATHAN M. SAMET,

The Johns Hopkins University, Baltimore, Maryland

CHARLES F. STEVENS,

The Salk Institute, La Jolla, California

JOHNL. VANDEBERG,

Southwest Foundation for Biomedical Research, San Antonio, Texas

PAUL GILMAN, Executive Director