Stringent plasmid

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Food Biotechnology

A plasmid that only replicates along with the main bacterial chromosome and is present as a single copy, or at most several copies, per cell. (See plasmid.)

Susan Allender-Hagedorn and Charles Hagedorn — An Agricultural and Environmental Biotechnology Annotated Dictionary

A plasmid that can only replicate at the same time as does the main bacterial chromosome, and is present as a single or, at most, several copies per cell.

UN Food and Agriculture Organization — Glossary of Biotechnology for Food and Agriculture