MU sees rise in number of athletes requesting sickle cell trait testing

July 13, 2007 | 12:00 a.m. CDT
Missouri football player Aaron O'Neal, left, is helped off the field after he collapsed during a voluntary workout at Faurot Field on July 12, 2005. O'Neal died later that day. A University Hospital neuropathologist who examined his brain said sickle cell trait could have played a role in the athlete's death.