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"Scientists at The Scripps Research Institute (TSRI) have reported successful preclinical tests of a new vaccine against heroin. The vaccine targets heroin and its psychoactive breakdown products in the bloodstream, preventing them from reaching the brain."^^<http://www.w3.org/2001/XMLSchema#string>
<http://medicalxpress.com/news/2013-05-heroin-vaccine-blocks-relapse-preclinical.html>