Spadin, PE 22-28 and PE 22-28 analogs were purchased from GeneCust Europe, Luxembourg. G418, Arachidonic acid (AA), 4-AP (4-aminopyridine), TEA (tetraethylammonium), Apamin and Charybdotoxin were purchased from Sigma-Aldrich, France, Glibenclamide was purchased from ICN Biomedicals (USA).
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