Primary isolate is a pure microbial or viral sample that has been obtained from an infected individual, rather than grown in a laboratory.
In chemistry and bacteriology, the verb isolate means to obtain a pure chemical, bacteriological or viral sample.
The noun 'isolate' refers to the sample itself.
[citation needed] According to the 'Bulletin of Experimental Treatments for AIDS, Year-End, 1999' glossary,[1] a primary isolate is "HIV taken from an infected individual, as opposed to that grown in a laboratory."
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