| TORCH | toxoplasmosis, other [congenital syphilis and viruses], rubella, cytomegalovirus, and herpes simplex... |
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| viruses, unclassified | Viruses whose taxonomic relationships have not been established. (12 Dec 1998) |
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| respiratory syncytial viruses | A group of viruses in the pneumovirus genus causing respiratory infections in various mammals. Humans and cattle are most affected but infections in goats and sheep have also been reported. (12 Dec 1998) |
| reticuloendotheliosis viruses | A subgenus of retroviruses type b, mammalian comprising a few isolates from birds, with no known corresponding endogenous relatives. (12 Dec 1998) |
| C group viruses | A serologic group of the genus Bunyavirus (formerly called group C arboviruses), composed of 12 species including Caraparu, Murutucu, and Oriboca virus. (05 Mar 2000) |
| RNA tumour viruses | Virus's of the subfamily Oncovirinae. (05 Mar 2000) |
| RNA viruses | Viruses whose genetic material is RNA. (12 Dec 1998) |
| phlebotomus fever viruses | An unclassified serologic group of arboviruses morphologically like Bunyavirus but antigenically unrelated, transmitted by Phlebotomus papatasi (sandfly) and causing phlebotomus fever; there are 20 strains, including Icoarachi and Itaporanga. Synonym: pappataci fever viruses, sandfly fever viruses. (05 Mar 2000) |
| mink cell focus-inducing viruses | Murine leukaemia viruses discovered in 1976 by hartley, wolford, old, and rowe and so named because the viruses originally isolated had the capacity to transform cell foci in mink cell cultures. Mcf viruses are generated in a multi-step process by recombination with other viral types including akr, friend, moloney, and rauscher. (12 Dec 1998) |
| mosaic viruses | Viruses which produce a mottled appearance of the leaves of plants. (12 Dec 1998) |
| plant viruses | Viruses parasitic on plants higher than bacteria. (12 Dec 1998) |
| mouse leukaemia viruses | Retroviruses of the murine leukaemia-sarcoma complex that produce leukaemia and sometimes lymphosarcomas in mice, including the Abelron, Gross, Moloney, Friend, and Rauscher strains of virus; they have been isolated from inbred mice having high incidence of spontaneous lymphoid leukaemia. (05 Mar 2000) |
| positive strand RNA viruses | Class IV and VI viruses that have a single stranded RNA genome that can act as mRNA plus strand) and in which the virus RNA is itself infectious. Includes Picornaviridae, Togaviridae and Retroviridae. (18 Nov 1997) |
| Salisbury common cold viruses | Strains of rhinovirus of historical interest because of early studies that established the viral aetiology of common colds. (05 Mar 2000) |
| helper viruses | Viruses which enable defective viruses to replicate or to form a protein coat by complementing the missing gene function of the defective (satellite) virus. Helper and satellite may be of the same or different genus. (12 Dec 1998) |
| sandfly fever group viruses | A group of viruses in the genus phlebovirus of the family bunyaviridae transmitted by the sandfly, phlebotomus papatasii, and causing a short febrile illness in humans. The sandfly fever sicilian virus, the type species of the phlebovirus genus, is not part of this group. (12 Dec 1998) |