sentences:  The Xinhua News Agency states that "sampling and examination" of wheat gluten was underway across China, centering on the presence of melamine.News breaks that scientists at a University of California, Davis animal health laboratory confirmed that a "popular brand of pet food" submitted for testing by area veterinarians was contaminated with melamine, even though it is not on the list of recalled cat and dog foods.On April 10, Menu Foods announces that the recall will be expanded to include foods manufactured at Menu Foods' plant in Streetsville, Ontario.