Marijuana legalization raises safety questions - Article Photos 5/6

In this photo taken on Friday, Jan. 4, 2013, Genifer Murray, founder and CEO of CannLabs talks about the testing of marijuana during an interview at her lab in Denver. As marijuana acceptance spreads, from states with full legalization to the states that allow marijuana for sick people, product safety is a growing concern. The federal agencies that regulate food and drug production are no help with pot safety because the drug remains illegal under federal law. Colorado has the nation's most extensive production guidelines for the safe growing of pot, but even here, enforcement is spotty.(AP Photo/Ed Andrieski)