stock strain

stock strain

a bacterial or other microbial strain that has been maintained under laboratory conditions as representative of its type.
References in periodicals archive ?
dysenteriae type 2 matching the laboratory's stock strain by pulsed-field gel electrophoresis was recovered from ill laboratory workers and from an uneaten pastry.
Breeders use grandparent pure-line stock strains to produce parent stock strains of chickens, which in turn supply eggs to hatcheries.