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Figure 10: Influence of coincubation with PUAT + L-NNA on contractile responses to ACh of PUAT-free ureters. ACh stimulated contractile frequencies of PUAT-free ureters remained significantly greater in the absence (control, closed bars, 𝑛 = 1 0 ) than those in the presence (open bars, 𝑛 = 1 0 ) of a ureter + PUAT and L-NNA. (RMANOVA 𝑃 < 0 . 0 5 group term, 𝑃 < 0 . 0 0 1 group × concentration term). * 𝑃 < 0 . 0 5 , ** 𝑃 < 0 . 0 1 .