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Figure 3


Fig. 3. Effects of changing extracellular pH on tension produced during continuous exposure of efferent branchial arteries to arginine vasotocin (AVT; 1 nmol l–1) or KCl (50 mmol l–1) in Hepes buffer. (A) Raising pH from 7.4 to 8.2 did not significantly affect contraction, whereas AVT and KCl contractions were significantly ({dagger}) decreased when pH was lowered from 8.2 to 7.4. (B) Representative tracings of the KCl responses. Values are means ± s.e.m. (N=4).





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