image: NFEPP activates opioid receptors in injured, but not normal, tissue. This material relates to a paper that appeared in the March 3, issue of Science, published by AAAS. The paper, by V. Spahn at Freie Universität Berlin in Berlin, Germany, and colleagues was titled, "A nontoxic pain killer designed by modeling of pathological receptor conformations." view more
Credit: G. Del Vecchio & V. Spahn