ConnexinsGap JunctionsConnexin 43Cell CommunicationLens, CrystallineIntercellular JunctionsEye ProteinsCarbenoxoloneIon ChannelsOocytesBotanyFreeze FracturingHeLa CellsGlycyrrhetinic AcidImmunohistochemistryIon Channel GatingIsoquinolinesZonula Occludens-1 ProteinXenopusMitragynaAstrocytesMolecular Sequence DataXenopus laevisMicroscopy, ConfocalHeptanol