extrachromosomal element


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plas·mid

(plaz'mid),
A genetic particle physically separate from the chromosome of the host cell (chiefly bacterial) that can function and replicate stably and usually confer some advantage to the host cell; not essential to the cell's basic functioning.
[cytoplasm + -id]

ex·tra·chro·mo·so·mal element

(ĕk′strə-krō′mə-sō′məl)
n.
See plasmid.

plas·mid

(plaz'mid)
A genetic particle physically separate from the chromosome of the host cell (chiefly bacterial) that can stably function and replicate; not essential to the basic functioning of the cell.
Synonym(s): extrachromosomal element, extrachromosomal genetic element.
[cytoplasm + -id]
References in periodicals archive ?
The presence of extrachromosomal elements in the isolates from both sites is consistent with previous observations in other systems (Hada & Sizemore 1981; Leahy & Colwell 1990; Ogunseitan et al.
When Falkow pursued this study as a graduate student in the early 1960s, first at the University of Michigan and next at Brown University, and then as an independent researcher at Georgetown University, he learned the biochemical and microbiological techniques necessary to deduce how bacteria transmit antibiotic resistance to one another by sharing circular extrachromosomal elements called plasmids.

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