JEB -- Schewe et al. 211 (5): 805 Figure IG2

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Fig. 2. (A–F) Changes in pH_i as a function of 5-HT concentration. 5-HT concentrations and the duration of 5-HT application are indicated in each panel. 5-HT concentrations $<=$ 10 nmol l^–1 induce monophasic drops in pH_i. Only concentrations $>=$ 10 nmol l^–1 produce bi- or multiphasic pH changes. (G) Summary data for acidifications induced by 0.1–10 nmol l^–1 5-HT (total pH_i changes). Summary data for 10 nmol l^–1 5-HT represent only monophasic acidification. Data in G are means ± s.e.m.; the number of experiments is given in parentheses.