Cure for radiation sickness found?

Summit writes: Could this be the greatest medical discovery of the century? A scientist has claimed to have discovered a radioprotectant that all but eliminates ARS (Acute Radiation Sickness) even in cases of lethal doses of radiation in tests on rats and monkeys. They also claim the drug, a protein, has no observed negative effects in humans. They have not irradiated any people just yet, but if this turns out to be true, it could mean everything from curing cancer to making manned interplanetary space expeditions feasible... not to mention treatment for radiation exposures in nuclear/radiological accidents/attacks. If this drug works, it would mean a true breakthrough as past experiments with radioprotectants were not particularly promising in any respect.

TFA: http://www.ynetnews.com/articles/0,7340,L-3748014,00.html