The Observer | UK News | Scientists admit: we were wrong about 'E':

"The study, published in the eminent journal Science last September, had an immediate impact. Doctors and anti-drug crusaders spoke of a 'neurological time bomb' facing the young. Others suggested that taking one of the tablets was the equivalent of playing Russian roulette with the brain, and demanded tighter 'anti-rave' laws to deal with it.
But today, scientists are facing up to the humiliation of admitting that the stark results they reported in the study were not a breakthrough but a terrible, humiliating blunder.
The study was based on the fact that laboratory monkeys and baboons had a severe reaction to the drug when it was injected in small doses. But it emerged this weekend that the vials of liquid did not contain ecstasy. Instead, the animals received a dose of methamphetamine, or speed - a drug widely known to affect the body's dopamine system. The tubes had somehow been mislabelled by the supplier. "