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HELPER VIRUS [6 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2012-10-23

English

Subject field(s)
  • Microbiology and Parasitology
  • Human Diseases
DEF

A virus that, by its infection of a cell already infected by a defective virus, is able to supply something the defective virus lacks, thus enabling the latter to multiply.

French

Domaine(s)
  • Microbiologie et parasitologie
  • Maladies humaines
DEF

Virus qui prend en charge les fonctions d'un virus défectif, pour lui permettre de terminer son cycle infectieux au cours d'une infection mixte. [Définition normalisée par l'AFNOR et reproduite avec son autorisation.]

OBS

virus assistant : terme normalisé par l'AFNOR et publié au Journal officiel de la République française le 22 septembre 2000.

Spanish

Campo(s) temático(s)
  • Microbiología y parasitología
  • Enfermedades humanas
DEF

Virus que suple una función o funciones ausentes en otro virus de la misma célula.

Save record 1

Record 2 2012-08-06

English

Subject field(s)
  • Microbiology and Parasitology
  • Genetics
DEF

A virus which is unable to reproduce in its host without the presence of another virus(named "helper virus") because it lacks one or more genetic functions necessary for its replication.

French

Domaine(s)
  • Microbiologie et parasitologie
  • Génétique
DEF

Virus mutant qui n'est capable de se reproduire après infection qu'en présence d'un virus assistant.

Spanish

Campo(s) temático(s)
  • Microbiología y parasitología
  • Genética
DEF

Virus que, por sí mismo, es incapaz de reproducirse cuando infecta a su célula hospedadora, pero que puede crecer en presencia de otro virus; este segundo virus le proporciona la necesaria maquinaria molecular de la que carece.

Save record 2

Record 3 2007-04-25

English

Subject field(s)
  • Microbiology and Parasitology
  • Plant Biology
  • Plant Diseases
DEF

A defective virus requiring a helper virus to provide functions necessary for replication. It may code for its own coat protein or various other products.

French

Domaine(s)
  • Microbiologie et parasitologie
  • Biologie végétale
  • Maladies des plantes
DEF

Virus dont le génome ne code pas pour l'ARN polymérase assurant sa propre transcription, celle-ci étant dépendante de l'ARN polymérase d'un autre virus dénommé de ce fait virus assistant ou auxiliaire.

Spanish

Save record 3

Record 4 2006-01-12

English

Subject field(s)
  • Microbiology and Parasitology
  • Blood
  • Immunology
CONT

Human T-lymphotropic virus 1,(HTLV-1) [is] a species in the genus BLV-HTLV retroviruses, of worldwide distribution, having an affinity for helper/inducer T Lymphocytes; it causes chronic infection and is associated with adult T-cell leukemia/lymphoma and chronic progressive myelopathy. Called also human T-cell leukemia virus type I and human T-cell lymphotrophic virus type I.

French

Domaine(s)
  • Microbiologie et parasitologie
  • Sang
  • Immunologie
DEF

Souche du virus «primate T-lymphotropic virus 1» isolée de cellules lymphocytaires matures T4 de patients ayant une lymphoprolifération maligne à cellules T.

OBS

[Le HTLV-1] est responsable de la leucémie à cellules T de l'adulte («leukemia-lymphoma, T-cell, acute, HTLV-1-associated»), de lymphome T («lymphoma, T-cell») (leucémie-lymphome aigus des lymphocytes T associés au HTLV-1). Il est impliqué dans des mycosis fungoides, dans le syndrome de Sézary, dans la paraparesie spastique tropicale («paralaresis, tropic spastic») («PST»).

Key term(s)
  • HTLV-1
  • HTLV-I
  • HTLV I
  • virus T lymphotrope 1 humain
  • virus T-lymphotrope de type 1 humain
  • virus T lymphotrope de type 1 humain

Spanish

Campo(s) temático(s)
  • Microbiología y parasitología
  • Sangre
  • Inmunología
OBS

HTLV, por las siglas en inglés Human T-Cell Lymphotropic Virus - I.

Save record 4

Record 5 1992-02-12

English

Subject field(s)
  • Genetics
CONT

The missing proteins are supplied by a "helper" provirus from which the psi region has been deleted. Psi is crucial to the inclusion of RNA in viral particles; without it, no virus carrying helper RNA can form. The particles that escape the cell, then carry therapeutic RNA and no viral genes.

French

Domaine(s)
  • Génétique

Spanish

Save record 5

Record 6 1986-09-04

English

Subject field(s)
  • Microbiology and Parasitology
CONT

A defective RNA virus that cannot survive on its own, hepatitis-delta virus requires the helper function of a DNA virus hepatitis B(or hepadnaviruses of other species), to support its replication and expression.

French

Domaine(s)
  • Microbiologie et parasitologie
CONT

On admet actuellement l'existence de deux virus dûment identifiés : le virus ARN de l'hépatite "A", le virus ADN de l'hépatite "B".

Spanish

Save record 6

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