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The lowdown on that heroin vaccine everyone's talking about

A vaccine to curb heroin dependence. It's been the goal of scientists the world over for decades, but to date, not one has been released to the market. But that could soon change. Mexican scientists have developed a heroin vaccine that has proven to be effective in animal trials, and are now preparing to begin testing… »2/24/12 7:55am2/24/12 7:55am