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Figure 2


Fig. 2. Effects of extracellular pH on efferent branchial artery contractions produced by arginine vasotocin (AVT; 1 nmol l–1), potassium chloride (KCl; 50 mmol l–1) or potassium acetate (KAc; 50 mmol l–1) in phosphate (PBS) or Hepes buffer. Values are means ± s.e.m. (N=4). *Different from same agonist (KCl or KAc) at all pH values lower than 8.2 or 8.6; {dagger}different from AVT at higher pH.