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Long-term detection of multiple transgene fragments in stool DNA. (A): The results using Fluc primer-probe; (B): the results using Amp primer-probe; and (C): the results using CMVp primer-probe. The number of mice at each point is 17. The individual data are shown as a plot with bars representing median and interquartile range. ND: not detected. *: p < 0.05 and **: p < 0.01 vs. pre-values before the injection.
