Glowing Pig Passes Genes to Piglets Two piglets glow fluorescent green from their snout, trotters, and tongue under ultraviolet light in Harbin, China. A cloned pig whose genes were altered to make it glow fluorescent green has passed on the trait to its young, a development that could lead to the future breeding of pigs for human transplant organs, a Chinese university reported. China Daily photo via Reuters

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