Article
On the relation of colony variants to the time dependency of colony formation during adaptive mutation of Escherichia coli FC40.
Canadian journal of microbiology - 1 Sept 1997
MacLeod P R, MacLeod R A
Abstract excerpt
When Escherichia coli FC40 formed adaptive Lac+ revertants on a selective agar medium containing lactose as the carbon source, the colonies which accumulated over several days were of two readily distinguishable types. Colonies of both types appeared both early and late on the plates. Cells of colonies that appeared early and late on the plates, irrespective of the type, when grown in liquid medium and replated,...
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