Glossary of Medical Terms

Our online medical glossary of medical terms and definitions includes definitions for terms related to treatment, and general medicine

PLASMID

A little, independently replicating, piece of extrachromosomal cytoplasmic DNA that can be transferred from one organism to other. Linear or circular DNA molecules found in both pro and eukaryotes capable of autonomous replication. Stringent plasmids occur at low copy number in cells, relaxed plasmids at tall copy number, ca 10 to 30. Plasmids can become incorporated into the genome of the host or can stay independent. An example is the f factor of E. Coli. May transfer genes and plasmids carrying antibiotic resistant genes can spread this trait rapidly through the population. Described largely from bacteria and protozoa. Some plasmids are capable of integrating into the host genome. A number of artificially constructed plasmids are used as cloning vectors.
phthalate ester hydrolase   phthalate oxygenase reductase   phthalein   phthalein dyes   phthalein test   phthalic   phthalic acid   phthalic acids   (1)
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