Dr. S. Ward Casscells, the Pentagon's chief medical officer, died of prostate cancer Sunday at age 60. Casscells held a chair in medicine and public health at the University of Texas Health Science Center at Houston before joining the Army Reserve at 54 and volunteering to serve in Iraq. He also investigated methods to protect troops from the worldwide avian flu epidemic. After being appointed to the Pentagon, Casscells started programs to study the use of autologous stem cells to heal soldiers' wounds and took action to improve conditions at Walter Reed Army Medical Center.

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