| PL | palmaris longus; pancreatic lipase; perception of light; peroneus longus; phospholipase; phospholipi... |
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| PLB | parietal lobe battery; phospholamban; phospholipase B; porous layer bead |
| PTLC | precipitation thin-layer chromatography |
| Rf | in paper or thin-layer chromatography, the distance that a spot of a substance has moved from the po... |
| Rst | in paper or thin layer chromatography, the distance that a spot of a substance has moved, relative t... |
| demarcation line of retina | Junction of avascular and vascular retina in retinopathy of prematurity; line marking the limits of an old retinal detachment. (05 Mar 2000) |
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| detached retina | <ophthalmology> A painless disorder (when spontaneous) where the patient complains of a gradual raising or lowering of a curtain over the visual field of the affected eye. May also occur as the result of trauma. (27 Sep 1997) |
| inferior nasal arteriole of retina | The branch of the central artery of the retina that supplies the lower medial, or nasal, part of the retina. Synonym: arteriola nasalis retinae inferior. (05 Mar 2000) |
| inferior nasal venule of retina | The small vein that passes from the inferior medial (nasal) part of the retina to join the central vein. Synonym: venula nasalis retinae inferior. (05 Mar 2000) |
| inferior temporal arteriole of retina | The branch of the central artery of the retina that passes laterally below the macula to supply the lower lateral or temporal part of the retina. Synonym: arteriola temporalis retinae inferior. (05 Mar 2000) |
| inferior temporal venule of retina | The small vein that passes from the lower lateral (temporal) part of the retina to enter the central vein. Synonym: venula temporalis retinae inferior. (05 Mar 2000) |
| iridial part of retina | iridial part of retina |
| optic part of retina | The internal layer of the retina containing the neural elements, as distinguished from the outer leaf of the retina, or pigmented layer. Synonym: pars optica retinae, neural layer of retina, optic part of retina, stratum cerebrale retinae. (05 Mar 2000) |
| temporal venules of retina | See: inferior temporal venule of retina, superior temporal venule of retina. (05 Mar 2000) |
| tigroid retina | A normal fundus to which a deeply pigmented choroid gives the appearance of dark polygonal areas between the choroidal vessels, especially in the periphery. Synonym: fundus tigre, leopard fundus, leopard retina, mosaic fundus, tigroid fundus, tigroid retina. (05 Mar 2000) |
| flecked retina | An retina exhibiting fundus flavimaculatus, hereditary drusen, or fundus albipunctatus. (05 Mar 2000) |
| flecked retina syndrome | <syndrome> Hereditary retinal disorder with abnormal transmission of fluorescence through the retinal pigment epithelium on angiography. (05 Mar 2000) |
| fleck retina of Kandori | An autosomal-recessive disorder of the retinal pigment epithelium occurring among Japanese. (05 Mar 2000) |
| layers of retina | Light sensitive layer of the eye. In vertebrates, looking from outside, there are four major cell layers: (i) the outer neural retina, which contains neurons (ganglion cells, amacrine cells, bipolar cells) as well as blood vessels, (ii) the photoreceptor layer, a single layer of rods and cones, (iii) the pigmented retinal epithelium (PRE or RPE), (iv) the choroid, composed of connective tissue, fibroblasts and including a well vascularised layer, the chorio capillaris, underlying the basal lamina of the PRE. Behind the choroid is the sclera, a thick organ capsule. In molluscs (especially cephalopods such as the squid) the retina has the light sensitive cells as the outer layer with the neural and supporting tissues below. See: retinal rods, retinal cones, rhodopsin. (18 Nov 1997) |
| leopard retina | A normal fundus to which a deeply pigmented choroid gives the appearance of dark polygonal areas between the choroidal vessels, especially in the periphery. Synonym: fundus tigre, leopard fundus, leopard retina, mosaic fundus, tigroid fundus, tigroid retina. (05 Mar 2000) |