Definitions for r factor
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Random House Webster's College Dictionary
R factor(n.)
a genetic component of some bacteria that provides resistance to antibiotics and can be transferred from one bacterium to another by conjugation.
Category: Genetics
Origin of R factor:
1960–65; r(esistance)factor
Citation
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"r factor." Definitions.net. STANDS4 LLC, 2013. Web. 25 May 2013. <http://www.definitions.net/definition/r factor>.

