| Rous sarcoma | <tumour> A fibrosarcoma, originally observed in a Plymouth Rock hen, now thought to be an expression of infection by certain viruses of the avian leukosis-sarcoma complex in the family Retroviridae. Synonym: avian sarcoma, Rous tumour. (05 Mar 2000) |
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| Rous sarcoma virus | <virology> The virus responsible for the classic first cell free transmission of a solid tumour, the chicken sarcoma, first reported by Rous in 1911. An avian C type oncorna virus, original source of the src oncogene. (18 Nov 1997) |
| Rous sarcoma virus protease | <enzyme> Has been sequenced; crystallographic structure has been determined Registry number: EC 3.4.23.- Synonym: protease, rous sarcoma virus, rous sarcoma virus aspartic protease (26 Jun 1999) |
| Rous tumour | <tumour> A fibrosarcoma, originally observed in a Plymouth Rock hen, now thought to be an expression of infection by certain viruses of the avian leukosis-sarcoma complex in the family Retroviridae. Synonym: avian sarcoma, Rous tumour. (05 Mar 2000) |
| Rous, F Peyton | <person> U.S. Pathologist and Nobel laureate, 1879-1970. See: Rous sarcoma, Rous sarcoma virus, Rous tumour, Rous-associated virus. (05 Mar 2000) |
| Rous-associated virus | A leukaemia virus of the leukosis-sarcoma complex which by phenotypic mixing with a defective (noninfectious) strain of Rous sarcoma virus effects production of infectious sarcoma virus with envelope antigenicity of the RAV. (05 Mar 2000) |
| roussette | 1. <zoology> A fruit bat, especially the large species (Pieropus vulgaris) inhabiting the islands of the Indian ocean. It measures about a yard across the expanded wings. 2. <zoology> Any small shark of the genus Scyllium; called also dogfish. See Dogfish. Origin: F.; so called in allusion to the colour. See Russet. Source: Websters Dictionary (01 Mar 1998) |
| Roussy, Gustave | <person> French pathologist, 1874-1948. See: Roussy-Levy disease, Roussy-Levy syndrome, Dejerine-Roussy syndrome. (05 Mar 2000) |
| Roussy-Levy disease | A type of cerebellar ataxia regularly associated with wasting of the calves and intrinsic muscles of the hands and with absent tendon reflexes; pes cavus and claw toes develop; autosomal dominant inheritance. Synonym: Roussy-Levy syndrome. (05 Mar 2000) |
| Roussy-Levy syndrome | A type of cerebellar ataxia regularly associated with wasting of the calves and intrinsic muscles of the hands and with absent tendon reflexes; pes cavus and claw toes develop; autosomal dominant inheritance. Synonym: Roussy-Levy syndrome. (05 Mar 2000) |
| roustabout | A laborer, especially a deck hand, on a river steamboat, who moves the cargo, loads and unloads wood, and the like; in an opprobrious sense, a shiftless vagrant who lives by chance jobs. Origin: Etymol. Uncertain. Source: Websters Dictionary (01 Mar 1998) |