| Tay's cherry-red spot | The ophthalmoscopic appearance of the normal choroid beneath the fovea centralis, appearing as a red spot surrounded by white retinal oedema in central artery closure or lipid infiltration in sphingolipidosis. Synonym: Tay's cherry-red spot. (05 Mar 2000) |
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| Tay, Warren | <person> English physician, 1843-1927. See: Tay's cherry-red spot, Tay-Sachs disease. (05 Mar 2000) |
| Tay-Sachs carrier | <genetics> One who carries the recessive gene that is responsible for Tay-Sachs disease. Genetic testing for this fatal disease is crucial so that Tay-Sachs carriers can be identified and provided with genetic counseling. (27 Sep 1997) |
| Tay-Sachs disease | <disease> A genetic disorder found in east European Jewish families which can result in early death bu affecting the brain and nerves by causing abnormal lipid metabolism. It is a lysosomal disease in which there is a deficiency of hexosaminidase A, an enzyme that degrades ganglioside GM2. Symptoms appear at age 3-6 months and include blindness, deafness, seizures, paralysis, dementia, decreased muscle tone and growth retardation. There is no known treatment and most children usually die between 2 and 5 years of age. Inheritance: autosomal recessive. (06 Oct 1997) |
| Taybi, Hooshang | <person> U.S. Paediatrician and radiologist, *1919. See: Rubinstein-Taybi syndrome. (05 Mar 2000) |
| Taylor's apparatus | taylor's back brace |
| Taylor's disease | Diffuse idiopathic cutaneous atrophy. (05 Mar 2000) |
| Taylor's splint | taylor's back brace |
| Taylor, Charles | <person> U.S. Orthopedic surgeon, 1827-1899. See: Taylor's back brace, Taylor's apparatus, Taylor's splint. (05 Mar 2000) |
| Taylor, Robert | <person> U.S. Dermatologist, 1842-1908. See: Taylor's disease. (05 Mar 2000) |
| tayra | <zoology> A South American carnivore (Galera barbara) allied to the grison. The tail is long and thick. The length, including the tail, is about three feet. Alternative forms: taira. Origin: From the native name. Source: Websters Dictionary (01 Mar 1998) |