Abstract
The electrophysiological properties of the two major glial cell types in cultures from the regenerating goldfish optic nerve/tract were studied with patch-clamp techniques. Spindle-shaped cells express myelin proteins. These oligodendrocyte-like cells possess outwardly rectifying currents, do not show glutamate activated currents and are rarely electrically coupled to neighboring cells. Cells of epitheloid morphology probably represent astrocytes. They are GFAP-positive and do not exhibit myelin proteins. These cells have glutamate activated currents, display a linear current to voltage relationship and are extensively electrically coupled thus displaying properties similar to mammalian astrocytes.
Published Version
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