Medical Definition of Patch clamp

1. A specialised and powerful variant of voltage clamping, in which a patch electrode of relatively large tip diameter (5m) is pressed tightly against the plasma membrane of a cell, forming an electrically tight, gigohm seal. The current flowing through individual ion channels can then be measured. Different variants on this technique allow different surfaces of the plasma membrane to be exposed to the bathing medium: the contact just described is a cell attached patch. If the electrode is pulled away, leaving just a small disc of plasma membrane occluding the tip of the electrode, it is called an inside out patch. If suction is applied to a cell attached patch, bursting the plasma membrane under the electrode, a whole cell patch (similar to an intracellular recording) is formed. If the electrode is withdrawn from the whole cell patch, the membrane fragments adhering to the electrode reform a seal across the tip, forming an outside out patch. (15 Mar 2000)

Lexicographical Neighbors of Patch Clamp

patching
patchings
patchouli
patchoulies
patchoulis
patchoulol synthase
patchouly
patchouly
patchwork
patchworked
patchworking
patchworks
patchwork quilt
patchy
patchy atelectasis
patch clamp (current term)
patch clamping
patch pocket
patch test
patch test
patch tests
patch up
pate
pate
pated
patefaction
Patein's albumin
patella
Patella
patellae

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