avirulent


Also found in: Dictionary, Thesaurus, Encyclopedia.

a·vir·u·lent

(ā-vir'yū-lent),
Not virulent.

avirulent

(ā-vîr′yə-lənt, ā-vîr′ə-)
adj.
Not virulent.

a·vir′u·lence n.

a·vir·u·lent

(ā-vir'yū-lĕnt)
Not virulent.

avirulent

Not highly infective or likely to cause disease.

avirulent

lacking virulence i.e. the ability of an organism to cause disease is absent.
References in periodicals archive ?
The coinfection experiments in this study with avirulent and virulent parasites in the same astrocytic host cell addressed an important question.
Therefore, further research is required in order to understand and identify the protective antigens in virulent and avirulent isolates of Rs and their role in the immune response against the bacterium, especially for the cellular response.
of avirulent Type LBB HDG QCL races 1 [4.sup.-]4 [4.sup.-] [X.sup.-] 2 2 [1.sup.+c] [4.sup.-]4 [X.sup.-] 5 3 [1.sup.+] [2.sup.=] [X.sup.-] 5 4 [1.sup.+] [2.sup.=] [X.sup.-] 7 Parents Medea [1.sup.=][X.sup.=] [1.sup.+] [2.sup.-] [1.sup.-] 6 LMPG [4.sup.-]4 4 4 0 Glossy 0;[1.sup.=] [4.sup.-] 4 [2.sup.+] 2 Hugenot (c) Means yellow chlorosis around the pustules.
incognita that are avirulent and virulent to gene Rk and their probable genotypes.
All 15 virulent isolates and 23 randomly selected avirulent isolates were used for in vitro antimicrobial drug susceptibility testing and genotyping.
This undoubtedly resulted from the fact that two older races were used in the selection process and LCB is particularly avirulent.
Isolate PXO61 of Race 1 is avirulent to Xa4, whereas PXO86 of Race 2 is virulent to this gene (Vera Cruz and Mew, 1989; Koch and Parlevliet, 1991).
Three-hundred seventy-five [F.sub.2] plants were tested with the KS strain of WCM, which is avirulent to Cmc1 and to the Ae.
Analysis of the complete genomic sequence of an apparently avirulent strain of avian hepatitis E virus (avian HEV) identified major genetic differences compared with the prototype pathogenic strain of avian HEV.
triticina isolates tested for virulence to adult plants of the Thatcher line with Lr12 were avirulent, and all the isolates tested produced smaller and fewer uredinia on adult plants of the Thatcher line with Lr34 compared with Thatcher.
Characterization of virulent and avirulent chicken Pennsylvania 83 influenza virus: Potential role of defective interfering RNAs in nature.
Biotype G was described as the first greenbug isolate avirulent to Wintermalt.