| PHD | pathological habit disorder; personal health data; post-heparin plasma diamine oxidase; potentially ... |
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| PTC | Portal triad clamping |
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| patch clamping | <physiology> 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 If the electrode is withdrawn from the whole cell patch, the membrane fragments adhering to the electrode reform a seal across the tip, forming an outside out patch.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) |
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| habit | <botany> The growth form of a plant, comprising its size, shape, texture and orientation. (09 Oct 1997) |
| habit chorea | <clinical sign> An involuntary compulsive, repetitive, stereotyped movement, resembling a purposeful movement because it is coordinated and involves muscles in their normal synergistic relationships, tics usually involve the face and shoulders. (18 Nov 1997) |
| habit scoliosis | Scoliosis supposedly due to habitual standing or sitting in an improper position. (05 Mar 2000) |
| habit spasm | <clinical sign> An involuntary compulsive, repetitive, stereotyped movement, resembling a purposeful movement because it is coordinated and involves muscles in their normal synergistic relationships, tics usually involve the face and shoulders. (18 Nov 1997) |
| habit tic | A habitual repetition of some grimace, shrug of the shoulder, twisting or jerking of the head, or the like. (05 Mar 2000) |
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