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The Müller cell membranes of the rabbit retina were investigated by means of freeze-fracturing. Orthogonal arrays of particles (OAP) were found almost exclusively where the Müller cell endfoot had direct contact with the vitreous body. In the center of the retina where the Müller cells are long and thin, the density of OAP was about 170/microns2. In the periphery where the Müller cells are shorter and thicker, the density of OAP was about 20/microns2. In this area, only half of the Müller cell endfeet were equipped with OAP. The results are discussed with respect to electrophysiological studies on the role of various K+ channels in glial cells. It is proposed that OAP might possibly represent specialized 'maxi'-K+ channels which are involved in K+ spatial buffering of the extracellular space.
H Wolburg, and
K Berg
March 1986,
Neuroscience letters,
H Wolburg, and
K Berg
January 1988,
Visual neuroscience,
H Wolburg, and
K Berg
January 1975,
Contributions to nephrology,
H Wolburg, and
K Berg
January 1976,
Acta oto-laryngologica,
H Wolburg, and
K Berg
February 1974,
Journal de microscopie,
H Wolburg, and
K Berg
September 1995,
Glia,
H Wolburg, and
K Berg
January 1983,
Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie,
H Wolburg, and
K Berg
February 1972,
Biochimica et biophysica acta,
H Wolburg, and
K Berg
August 1979,
Journal of neurocytology,
H Wolburg, and
K Berg
May 1978,
Journal of ultrastructure research,
