| PVR | peripheral vascular resistance; perspective volume rendering; poliovirus receptor; postvoiding resid... |
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| VTR | variable tandem repeats; videotape recording; vesicular transport system |
| peyer's patch | One of the lymphatic nodule aggregates existing in the intestines. (09 Oct 1997) |
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| photo-patch test | A test of contact photosensitization: after application of a patch with the suspected sensitiser for 48 hours to two sites, if there is no reaction one area is exposed to a weak erythema dose of sunlight or ultraviolet light; if positive, a more severe reaction with vesiculation develops at the exposed patch area than the nonexposed skin patch site. (05 Mar 2000) |
| moth patch | <dermatology> Melasma cholasma hepaticum a term formerly used to refer to circumscribed facial hyperpigmentation resembling melasma that may occur as a cutaneous manifestation of chronic liver disease. Origin: Gr. Chloazein = to be green (18 Nov 1997) |
| whole cell patch | <physiology> A variant of patch clamp technique, in which the patch electrode seals against the cell, with direct communication between the interior of the electrode and the cytoplasm. (18 Nov 1997) |
| mucous patch | An oval to round, yellow-gray to white, membrane-covered lesion or lesions occurring on the mucous membranes; usually seen in secondary syphilis. (05 Mar 2000) |
| salmon patch | Interstitial or parenchymatous keratitis giving rise to neovascularization of the cornea. Synonym: Hutchinson's patch. (05 Mar 2000) |
| herald patch | The initial rapidly enlarging oval-shaped red papulosquamous lesion, usually on the trunk, heralding the widespread eruption of pityriasis rosea, and preceding the latter by 7-14 days. (05 Mar 2000) |
| Hutchinson's patch | Interstitial or parenchymatous keratitis giving rise to neovascularization of the cornea. Synonym: Hutchinson's patch. (05 Mar 2000) |
| shagreen patch | An oval-shaped nevoid plaque, skin-coloured or occasionally pigmented, smooth or crinkled, appearing on the trunk or lower back in early childhood; sometimes seen with other signs of tuberous sclerosis. Synonym: shagreen patch. (05 Mar 2000) |
| inside out patch | A variant of the patch clamp technique, in which a disc of plasma membrane covers the tip of the electrode, with the inner face of the plasma membrane facing outward, to the bath. (18 Nov 1997) |
| opaline patch | A mucous patch of silver-gray appearance. (05 Mar 2000) |
| outside out patch | A variant of patch clamp technique, in which a disc of plasma membrane covers the tip of the electrode, with the outer face of the plasma membrane facing outward, to the bath. (18 Nov 1997) |