See Also: blue white colour selection(medicine)
Red, White, and Blue Beach(tourism)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
BLUE CROSS BLUE SHIELD(finance)
BLUE CROSS AND BLUE SHIELD OF ME(finance)
Medicine Lodge Memorial Hospital- Medicine Lodge(health)
selection(dictionary)
Self-selection(money)
k selection(medicine)
Self selection(finance)

blue white colour selection (medicine)


blue white colour selection
<molecular biology, procedure> Method for identifying bacterial clones containing plasmids with inserts. Many modern vectors have their polycloning site within a part of the LacZ gene encoding _ galactosidase, which provides _ complementation in an appropriate mutant E. Coli strain. This means that a re ligated (empty) vector will produce blue colonies when grown on plates containing IPTG and X gal, but colonies with a substantial insert in their plasmid's polycloning site are unable to produce functional _ galactosidase and so produce white colonies.