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HONG KONG -- Replacement of degenerative discs in the cervical spine with cadaver allografts shows early promise as an alternative to fusion or artificial discs, found researchers here.

MEMPHIS, Tenn. -- Clinicians may one day give children a nasal spray of viral enzymes to prevent acute otitis media, researchers said here.

WASHINGTON -- White House spokesman Tony Snow, who was treated for colon cancer in 2005, said today he would have surgery on Monday to resect a small growth discovered in his lower abdomen. He cautioned reporters against jumping to conclusions.

TORONTO -- The common practice of giving patients with acute lung injury nitric oxide (NO) may do more harm than good, investigators here reported.

ROCKVILLE, Md. -- In an effort to insulate the FDA and members of its advisory panels from suspicion of conflicts of interest, the agency said it will no longer solicit counsel from researchers who have received ,000 or more from a manufacturer with a product under review.

CHAPEL HILL, N.C. -- John Edwards, the former senator, announced today that his wife, Elizabeth Edwards, 57, has had a recurrence of breast cancer, a bony metastasis, but he is continuing his campaign to be the Democratic candidate for the presidency. Elizabeth Edwards had a lumpectomy in 2004 and adjuvant chemoradiation. He and his wife called the malignancy treatable. "The campaign goes on," he said.

NEW YORK -- Progression-free survival may be a blurry yardstick for the efficacy of cancer drugs because the definition of when progression begins is subjective, cautioned investigators here.

BALTIMORE -- Genetically modified mosquitoes could turn the tables one day on malaria, according to researchers here. They created a mosquito unable to carry and transmit the malaria parasite.

AMSTERDAM -- Port-wine stains may redarken over time after pulsed-dye laser treatments but nonetheless remain lighter than pretreatment, researchers here have found.

BRISTOL, England -- Even 15 minutes a day of extra moderate to vigorous running, jumping, or kicking a ball can dramatically cut the risk of childhood obesity, according to researchers here.

PHILADELPHIA -- Spinal cord injuries among patients 70 and older have increased fivefold over the past three decades, researchers here reported.

NEW YORK -- Minnesota and Vermont require pharmaceutical companies to disclose payments of or more to physicians and other health care providers, but both states have been accused of failing to deliver on that promise of transparency.

MEMPHIS, Tenn. -- Children and adolescents who survive acute lymphoblastic leukemia (ALL) may need a lifetime of follow-up due to elevated risk of secondary neoplasms that continues to climb through adulthood.

BETHESDA, Md. -- Diets heavy in fat may modestly increase the risk of breast cancer for postmenopausal women, found a large cohort study that added evidence to a much-debated association.

HOUSTON -- When more than 20 lymph nodes are removed and evaluated during surgery for colon cancer, there is a 14% increase in five-year survival, reported investigators here.

MINNEAPOLIS -- In household lore, duct tape has a million uses, but it is still knocking on the medicine cabinet door as a cure for common warts, according to researchers here.

CHICAGO -- More than five million older Americans are living with Alzheimer's disease or other dementias, a 10% increase in prevalence from just five years ago, according to an estimate commissioned by the Alzheimer's Association.

LEIDEN, The Netherlands -- For early rheumatoid arthritis, aggressive combination therapy can slow progression to joint damage, investigators here found.