| Paramyxoviridae | <virology> Class V viruses of vertebrates. The genome consists of a single negative strand of RNA as one piece. The helical nucleocapsid has a virus specific RNA polymerase (transcriptase) associated with it. They are enveloped viruses: main members are Newcastle disease virus, measles virus and the parainfluenza viruses. (18 Nov 1997) |
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| paramyxoviridae infections | Infections with viruses of the family paramyxoviridae. This includes morbillivirus infections, paramyxovirus infections, pneumovirus infections, and rubulavirus infections. (12 Dec 1998) |
Synonyms :
Synonyms : Infections, Paramyxoviridae, Infection, Parainfluenza Virus, Infection, Paramyxoviridae, Infections, Parainfluenza Virus, Parainfluenza Virus Infection, Paramyxoviridae Infection, Virus Infection, Parainfluenza, Virus Infections, Parainfluenza
| Paramyxoviridae |
the paramyxoviruses: a family of RNA viruses having a pleomorphic, usually roughly spherical but occasionally filamentous virion 150300 nm in diameter, consisting of a lipid bilayer membrane with large peplomers surrounding a helical nucleocapsid. The genome consists of a single molecule of negative-sense single-stranded RNA (MW 57 × 106, size 16 kb). Viruses contain six to ten major polypeptides, including a transcriptase, and are sensitive to lipid solvents, detergents, disinfectants, and extremes of pH; thermostability varies according to genus. Replication occurs in the cytoplasm and assembly is by budding through the plasma membrane. Host range is generally narrow in nature but broad in cultured cells, and transmission is horizontal, chiefly airborne. There are two subfamilies, Paramyxovirinae and Pneumovirinae.
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