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How do patch clamp seals form? A lipid bleb model

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Abstract

Individual ion channels are electrically isolated and studied in living cells with the tight patch voltage clamp method. Channels are identified, categorized, and sometimes named on the basis of the biophysical properties obtained with this method. Although it is usually presumed that these recordings are from native, undisturbed membrane, the physical basis of this technique is not well established. Observations that lipid blebs readily form when suction is applied to patch clamp electrodes suggest that many single channel recordings are from ion channels in these blebs.

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Milton, R.L., Caldwell, J.H. How do patch clamp seals form? A lipid bleb model. Pflügers Arch 416, 758–765 (1990). https://doi.org/10.1007/BF00370626

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  • DOI: https://doi.org/10.1007/BF00370626

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