Fig. 4

Comparison of bladder strips from different groups in response to α, β-me ATP, CAP, and KCl; and the CRCs of carbachol. a Force response to CAP of the WT, KO, SQW H, and SQW L groups. b Force response to α,β-me ATP of the WT, KO, SQW H, and SQW L groups. c Force response to KCl of the WT, KO, SQW H, and SQW L groups. d CRCs of carbachol of the WT, KO, SQW H, and SQW L groups. Values are expressed as mean ± SD. * = P < 0.05; ** = P < 0.01, KO group vs. WT group