OXNARD, Calif. -- Dallas Cowboys owner Jerry Jones said he has dealt with Stage 4 melanoma and that an experimental trial drug saved his life. "I was saved by a fabulous treatment and great doctors and a real miracle [drug] called PD-1 [therapy]," Jones told The Dallas Morning News on Tuesday. Jones told the newspaper he was diagnosed in June 2010 and began treatment soon thereafter. According to the American Cancer Society, PD-1 therapy -- or programmed cell death-1 -- helps "the immune system recognize and attack cancer cells." It's called PD-1, and it really, really, really worked.