| GPM | general preventive medicine; giant pigmented melanosome |
|---|---|
| PE | Edinburgh Pharmacopoeia; pancreatic extract; paper electrophoresis; partial epilepsy; pelvic examina... |
| pigm | pigment, pigmented |
| PPCRA | pigmented paravenous chorioretinal atrophy |
| PPM | permanent pacemaker; phosphopentomutase; physician practice management; pigmented pupillary membrane... |
| epithelial layers | See: epithelium. (05 Mar 2000) |
|---|---|
| Epithelial membrane antigen | <cell biology> Heavily glycosylated membrane glycoprotein. Encoded by the MUC 1 gene, has a molecular weight of around 300 kD, more than half of which is O linked glycan. There is a 69 residue cytoplasmic domain and the extracellular domain may extend hundreds of nanometres beyond the plasma membrane, the increased expression in carcinoma cells may reduce the adhesion and mask antigenic properties of the cells. Similar functions are ascribed to ASGP, epiglycanin and leucosialin. (18 Nov 1997) |
| epithelial migration | Apical shift of epithelial attachment, exposing more of the tooth crown. (05 Mar 2000) |
| epithelial myoepithelial carcinoma | <tumour> A salivary gland malignancy composed of an inner layer of ductal cells surrounded by a layer of clear myoepithelial cells. (05 Mar 2000) |
| epithelial nest | A focus of central keratinization within concentric layers of abnormal squamous cells; seen in squamous cell carcinoma. Synonym: epithelial nest, epithelial pearl, squamous pearl. (05 Mar 2000) |
| epithelial pearl | A focus of central keratinization within concentric layers of abnormal squamous cells; seen in squamous cell carcinoma. Synonym: epithelial nest, epithelial pearl, squamous pearl. (05 Mar 2000) |
| epithelial plug | A mass of epithelial cells temporarily occluding an embryonic opening; the term is most commonly used with reference to the external nares. (05 Mar 2000) |
| epithelial tissue | See: epithelium. (05 Mar 2000) |
| juvenile epithelial corneal dystrophy | Epithelial dystrophy characterised by progressive cysts and opacities of the corneal epithelium, with onset in infancy. Inheritance: autosomal dominant with incomplete penetrance. Synonym: Meesman dystrophy. (22 Sep 2002) |
| focal epithelial hyperplasia | Hyperplasia of the mucous membrane of the lips, tongue, and less commonly, the buccal mucosa, floor of the mouth, and palate, presenting soft, painless, round to oval sessile papules about 1 to 4 mm in diameter. The condition usually occurs in children and young adults and has familial predilection, lasting for several months, sometimes years, before running its course. A viral aetiology is suspected, the isolated organism being usually the human papilloma virus. (12 Dec 1998) |
| laminated epithelial plug | An accretion of epithelia in the external auditory canal. Synonym: laminated epithelial plug. (05 Mar 2000) |
| Fuchs' epithelial dystrophy | Epithelial oedema secondary to endothelial dystrophy of the cornea. (05 Mar 2000) |
| all-trans-retinal | The orange retinaldehyde resulting from the action of light on the rhodopsin of the retina, which converts the 11-cis-retinal component of the rhodopsin to all-trans-retinal plus opsin. Synonym: trans-retinal, visual yellow. (05 Mar 2000) |
| blood-retinal barrier | Specialised nonfenestrated tightly-joined endothelial cells that form a transport barrier for certain substances between the retinal capillaries and the retinal tissue. (12 Dec 1998) |
| central retinal artery occlusion | <ophthalmology> The sudden blockage of the retinal artery with a blood clot that commonly leads to a painless but irreversible blindness in that eye. (12 Jan 1998) |