plasmid. plasmid, in microbiology, an extrachromosomal genetic element that occurs in many bacterial strains. Plasmids are ...

... they can carry larger inserts than either pUC plasmids (plasmids engineered to produce a very high number of DNA copies but ... recombinant DNA: Creating the clone: Cosmids are engineered vectors that are hybrids of plasmid and phage lambda; however, ...