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This has been attributed in part to the olfactory ensheathing glial cells that encompass the olfactory sensory neuron fascicles. Olfactory ensheathing cells (OECs) also promote axon growth <jats:italic>in vitro<\/jats:italic> and when transplanted <jats:italic>in vivo<\/jats:italic> to sites of injury. The mechanisms involved remain largely unidentified owing in part to the limited knowledge of the physiological properties of ensheathing cells. Glial cells rely for many functions on the properties of the potassium channels expressed; however, those expressed in ensheathing cells are unknown. Here we show that OECs express voltage\u2010dependent potassium currents compatible with inward rectifier (<jats:italic>K<\/jats:italic><jats:sub>ir<\/jats:sub>) and delayed rectifier (<jats:italic>K<\/jats:italic><jats:sub>DR<\/jats:sub>) channels. Together with gap junction coupling, these contribute to the heterogeneity of membrane properties observed in OECs. The relevance of K<jats:sup>+<\/jats:sup> currents expressed by ensheathing cells is discussed in relation to plasticity of the olfactory nerve. 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