Figure 2. Scattergram of analgesic effect on two consecutive days of rats chosen in microarray experiment.

In 2 Hz treated groups, the HR and NR rats have well reproducible in analgesic effect (R = 0.838, P<0.01 Pearson Correlation) on two consecutive days were chosen (A). Meanwhile, the rats in 100 Hz treated groups have well reproducible in analgesic effect (R = 0.988, P<0.001 Pearson Correlation) on two consecutive days were chosen (B).