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

a·vir′u·lence n.


(Microbiology) (esp of bacteria) not virulent


(eɪˈvɪr yə lənt, eɪˈvɪr ə-)

(of microorganisms) having lost virulence; no longer pathogenic.
a•vir′u•lence, n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.avirulent - not virulent; unable to produce disease
virulent - infectious; having the ability to cause disease
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References in periodicals archive ?
In summary, the results demonstrate that prestimulated astrocytes can inhibit the proliferation of avirulent strains of T.
Soil probably contains a variety of naturally occurring phages active against both avirulent B.
In November 1998, NTGSN detected 11 isolates from previously reported TB cases among persons in New Jersey whose DNA fingerprints matched the avirulent laboratory M.
Mutants of Salmonella typhimurium that cannot survive within the macrophage are avirulent. Proc Natl Acad Sci USA 1986; 83 : 5189-93.
Signals involved in Arabidopsis resistance to Trichoplusia ni caterpillars induced by virulent and avirulent strains of the phytopathogen Pseudomonas syringae.
Characterization of clone 13, a naturally attenuated avirulent isolate of Rift Valley fever virus, which is altered in the small segment.
rileyi strains compared with an avirulent mutant strain grown over a period of 30 days (El - Sayed et al., 1989).
A preliminary screening of the recurrent parents and the Lr51 donor line indicated that race THBJ was virulent on Express but avirulent on Lr51 donor line.
Trichoderma speciesopportunistic, avirulent plant symbionts.
Characterization of virulent and avirulent A/chicken/Pennsylvania/ 83 influenza A viruses: potential role of defective interfering RNAs in nature.