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Chick α9 containing receptors do not activate the oocyte IClCa. Representative traces of responses evoked by 100 μM ACh in oocytes expressing either heteromeric (A), homomeric (B) or hybrid (C), nAChRs, before (left—black trace) and after (right—gray trace) a 3-h incubation with the fast calcium chelator BAPTA-AM (Vhold = −70 mV; [Ca2+]extracellular = 1.8 mM). Traces are representative of n = 4–12 per group.
