image: Sample extraction at the field laboratory. This image relates to a paper that appeared in the 26 September, 2013, issue of Science Express, published by AAAS. The paper, by Shen Qu at University of Iowa in Iowa City, Iowa, and colleagues was titled, "Product-to-Parent Reversion of Trenbolone: Unrecognized Risks for Endocrine Disruption." view more
Credit: [Image courtesy of Gerrad D. Jones]