Overturning a judge's 2007 dismissal of the case, a split Arizona Court of Appeals panel said the Havasupai and other plaintiffs had provided enough information to go to trial or at least enough to go forward in trial court pending further proceedings.

The northern Arizona tribe, whose isolated village lies deep in a gorge off the Grand Canyon, claims Arizona State University and University of Arizona researchers misused blood samples taken from more than 200 tribal members for diabetes research in the 1990s by also using it for research into schizophrenia, inbreeding and ancient population migration.

The tribe claims the additional research was conducted without its permission and constituted an invasion of privacy. As a result, the tribe says, some members now fear seeking medical attention.

Attorneys for the university system and individual researchers have argued that tribal members supplied the blood samples voluntarily and that there is legitimate public interest in data that can advance disease research.

• Havasupai Tribe: http://www.havasupaitribe.com/
• Arizona Court of Appeals Division One: http://www.cofad1.state.az.us