Strain (biology) - Wikipedia
https://en.wikipedia.org/wiki/Strain_(biology)
OverviewMicrobiology and virologyPlantsRodentsInsectsSee alsoExternal linksIt has been said that "there is no universally accepted definition for the terms 'strain', 'variant', and 'isolate' in the virology community, and most virologists simply copy the usage of terms from others". A strain is a genetic variant or subtype of a microorganism (e.g., a virus, bacterium or fungus). For example, a "flu strain" is a certain biological form of the influenza or "flu" virus. These flu strains a…
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