Loss of Transposons When the Plasmid pCG86 Transferred into Laboratory Strain E.Coli K-12
1. Introduction In a recent article Dr S. Palchaudhuri has shown that the F plasmid of E.coli K-12 was never a single replicon but precisely a co-integrate of two replicons, F replicon and R replicon; but these two replicons are never expressed simultaneously. Under the selection pressure of antibiotics abused in Tokyo hospitals, F replicon […]