Articles published in the University of Arizona Report on Research may be reprinted without special permission. Credit will be appreciated.

Published by
Office of the Vice President for Research
Richard C. Powell
Vice President for Research and Graduate Studies

Editorial inquiries and comments
Editor, Report on Research
UA News Services
The University of Arizona
Tucson, Arizona 85721
(520) 626-4364
dds@u.arizona.edu

Report on Research Staff
Director of Research Publications and Editor
Dennis D. St.Germaine
Manager, University Publications
UA News Services

Art Director
Darla L. Keneston
University of Arizona Health Sciences Center, Biomedical Communications

Writers
D.A. Barber
Julieta González
Mari N. Jensen

Proofreaders
Jeff Harrison
Kate Harrison

Photographer
Jeff Smith of FOTOSMITH

Arizona Board of Regents
Gary Stuart, President
Fred Boice
Robert Bulla
Ernest Calderón
Loraine Frank
Chris Herstam
Jack Jewett
Kay McKay
Christina Palacios
Don Ulrich
Wesley McCalley , Student Regent
Benjamin Graff, Student Regent, non-voting

Ex Officio
Janet Napolitano, Governor of Arizona
Tom Horne, Arizona Superintendent of Schools