ORLANDO, Fla. (AP) - Doctors were just hoping to treat symptoms when they gave people with a deadly blood disorder a drug to reduce the need for transfusions. To their astonishment, signs of the disease itself disappeared in nearly half of them. Specialists said the experimental drug, Revlimid, now looks like a breakthrough and the first effective treatment for many people with myelodysplastic syndrome, or MDS, which is even more common than leukemia. "It may be, if not eradicating the disease, putting it into what I would call deep remission," said Dr. David Johnson, a cancer specialist at Vanderbilt-Ingram Cancer...