Dr. Bernie Machen
President

Dr. Win Phillips
Vice President for Research

Board of Trustees
Carlos Alfonso, Tampa
Roland Daniels, Gainesville
Manny A. Fernandez, Fort Myers
W.A. "Mac" McGriff III, Jacksonville
Joelen Merkel, Boca Raton
Dianna Fuller Morgan, Orlando
Cynthia O'Connell, Tallahassee
Earl W. Powell, Miami
Pierre Ramond, Gainesville
Jamal Sowell, Gainesville
Albert W. Thweatt Sr., Petersburg VA
Alfred C. Warrington IV, Houston TX

Explore: Research at the University of Florida is published by the Office of Research & Graduate Programs at the University of Florida. For more information about the research program, contact Vice President for Research Win Phillips, D.Sc., 223 Grinter Hall, Box 115500, Gainesville, FL 32611-5500 Phone: (352) 392-1582. For details about research highlighted in this issue, contact the editor or the researchers directly.

The publication of Explore is not financed by state-appropriated funds. Opinions expressed do not reflect the official views of the university. Use of trade names implies no endorsement by the University of Florida.
© 2003 University of Florida.

For permission to reprint any part of this magazine, contact the Editor

Explore magazine, Box 115500, Gainesville, FL 32611-5500.
Phone: (352) 392-8229
E-mail: joekays@ufl.edu

Visit Explore on the World Wide http://www.research.ufl.edu/explore

Editor:
Joseph M. Kays

Art Director:
Katherine Kinsley-Momberger

Copy Editor:
Patricia B. McGhee

Design and Illustration:
Deborah Duggan
Jessica Gordon

Printing:
StorterChilds Printing, Gainesville
Member of the University Research Magazine Association
www.urma.org