(cytology) A loop of double-stranded DNA that is separate from and replicates independently of the chromosomes, most commonly found in bacteria, but also in archaeans and eukaryotic cells, and used in genetic engineering as a vector for gene transfer.

plural of plasmid

Synonym of plasmidial

(biology) Relating to plasmids.

Any of a family of vectors for protein expression where the expression of the insert DNA is controlled by the T7 promoter, a phage promoter.

A circular, tumor-inducing plasmid found in bacteria of the genus Agrobacterium

plural of pET plasmid

plural of Ti plasmid

Relating to plasmids.

That lacks a plasmid