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Mutants used to analyze PB transposition. (A) Schematic diagrams of PB insertions in Ku80, 222, and A6. Primers used in genotyping are indicated by arrows. (B) Ku80 gene expression in Ku80PB/+ male testis. (C) Reduced expression of Ku80 in male germ cells of Ku80PB/+ was revealed by real-time RT-PCR. *P < 0.05, **P < 0.01. Error bars were plotted by the standard error of the mean (SEM).
