AMI cause pain-related behaviors through activation of ASIC3 channels. A, pain-related behaviors as determined by the time spent for following saline or AMI (300 μm or 1 mm or 3 mm) injection (10 μl) in asic3+/+ and asic3−/− mice. Data are means ± S.E. n = 6–9. **, p < 0.001 versus saline; ##, p < 0.001, asic3+/+ versus asic3−/−. B, pain-related behaviors as determined by the time spent for following saline or AMI (3 mm) injection (10 μl) in asic1+/+ and asic1−/− mice. Data are means ± S.E. n = 10. *, p < 0.05, asic1+/+ versus asic1−/−.