The science of K2

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It's not just one drug. When he talks about K2, University of Arkansas for Medical Sciences researcher Keith McCain asks people to imagine a room full of drugs. In the room there is cocaine, heroin, methamphetamines and a bevy of other familiar, deadly substances. In the corner, there's K2. About to enter are his children. But before his children go into the room of drugs, McCain is given an opportunity to remove just one drug. "I would take out K2," he says. McCain is one of the five investigators attached to a $2.7 million grant to study the toxicity of synthetic cannabinoids such as the ones that make up the multiple substances called K2. When Paul Prather, who is leading UAMS' K2 study, first...

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