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In this March 4, 2015, file photo, an order of McDonald's Chicken McNuggets is displayed for a photo in Olmsted Falls, Ohio. McDonald’s had signaled changes were in store in late 2014, and the company said it was evaluating the cooking procedures and ingredients for its core menu items. McDonald's said it is testing Chicken McNuggets made without artificial additives and fresh beef instead of frozen beef for some burgers. (AP Photo/Mark Duncan, File)

Demonstrators rally in favor of labeling genetically modified food at the Capitol in Albany, N.Y., on Tuesday, April 28, 2015. Lawmakers haven't set a vote on the measure, which faces significant opposition particularly in the state Senate. (AP Photo/Tim Roske)

Demonstrators rally in favor of labeling genetically modified food at the Capitol in Albany, N.Y., on Tuesday, April 28, 2015. Lawmakers haven't set a vote on the measure, which faces significant opposition particularly in the state Senate. (AP Photo/Tim Roske)