| haemagglutinin glycoproteins, influenza virus | Membrane glycoproteins from influenza viruses which are involved in haemagglutination, virus attachment, and envelope fusion. Fourteen distinct subtypes of ha glycoproteins and nine of na glycoproteins have been identified from influenza a virus; no subtypes have been identified for influenza b or influenza c viruses. (12 Dec 1998) |
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| C type virus | <molecular biology, virology> Originally C type particles identified in mouse tumour tissue and later shown to be oncogenic RNA viruses Oncovirinae) that bud from the plasma membrane of the host cell starting as a characteristic electron dense crescent. Include feline leukaemia virus, murine leukaemia and sarcoma viruses. (18 Nov 1997) |
| cucumber mosaic virus satellite | A satellite RNA (not a satellite virus) which has several types. Different cucumoviruses can act as helper viruses for different types. (12 Dec 1998) |
| haemorrhagic disease virus, epizootic | A species of orbivirus causing a fatal disease in deer. It is transmitted by flies of the genus culicoides. (12 Dec 1998) |
| haemorrhagic disease virus, rabbit | A virus species in the genus calicivirus which causes haemorrhagic disease, including haemorrhagic septicaemia, in rabbits. (12 Dec 1998) |
| haemorrhagic fever virus | <virology> Any of many viruses in the families Flaviviridae, Filoviridae and Bunyaviridae that are often spread by rodents and biting insects, these viruses cause diseasescharacterised by fever and bleeding (such as Ebola). (09 Oct 1997) |
| haemorrhagic fever virus, crimean-congo | The type species of nairovirus of the family bunyaviridae isolated from febrile patients in africa. It is primarily transmitted by ticks and causes a severe, often fatal disease in humans. (12 Dec 1998) |
| Powassan virus | <virology> A virus of the genus Flavivirus (family Flaviviridae), transmitted by ixodid ticks and causing Powassan encephalitis in children; also capable of producing meningoencephalomyelitis in rabbits and children. Origin: Powassan, Canada, where first isolated (05 Mar 2000) |
| hand-foot-and-mouth disease virus | The virus causing hand-foot-and-mouth disease; chiefly type A16 but also types A4, A5, A7, A9, or A10 Entervirus coxsackievirus. (05 Mar 2000) |
| hantaan virus | The type species of the genus hantavirus infecting the rodent apodemus agrarius and humans who come in contact with it. It causes syndromes of haemorrhagic fever associated with vascular and especially renal pathology. (12 Dec 1998) |
| hard pad virus | The virus causing hard pad disease, probably canine distemper virus, but sometimes not recovered. (05 Mar 2000) |
| Harvey sarcoma virus | <oncogene> One of a family of oncogenes, first identified as transforming genes of Harvey and Kirsten murine sarcoma viruses. (Name from rat sarcoma because Harvey virus, though a mouse virus, obtained its transforming gene during passage in a rat). Transforming protein coded is p21ras, a GTP-binding protein with GTPase activity, that resembles regulatory G-proteins. (18 Nov 1997) |
| cytopathogenic virus | A virus whose multiplication leads to degenerative changes in the host cell. See: cytopathic effect. (05 Mar 2000) |
| cytoplasmic polyhedrosis virus group | <virology> A group of viruses in the family Reoviridae which infects arthropods (like spiders, insects, crustaceans, horseshoe crabs, etc.). (09 Oct 1997) |
| salivary gland virus | A highly species-specific herpesvirus (cytomegalovirus) with particular affinity for the salivary gland tissue. Synonym: salivary gland virus. (05 Mar 2000) |