The best replacement for plasmid is vector.


The best alternatives to plasmid are rated as following:
★★★★★  vector
★★★★  chromosome
★★  chromosomal dna
★★  phage
★  low copy plasmid
★  bacterial dna
★  bacterial chromosome
★  genomic dna
★  viral vector
★  cosmid
★  bac
★  linear plasmid
★  transposon
  recombinant plasmid
  episome
  5kb supercoil plasmid
  vigor

Your alternative for plasmid is not listed? Suggest!
Speaking about plasmid, one probably shouldn't forget about two origins of replication.

Other search terms related to plasmid and their ratings are:

★★★★★ two origins of replication
★★★★★ antibiotic resistance
★★ restriction enzyme
bacteria
You have in mind a companion for plasmid and it is not yet here? Propose!



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plasmid
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chromosome