when e. coli cells infected with lambdatrp phage are incubated with chloramphenicol under the `` '' ptrp-promoted '' '' conditions ( imamoto and tani , 1972 ; segawa and imamoto , 1974 ) , the trp mrna molecules synthesized after removal of the antibiotic contain only promoter-distal information .
C0007634
cells
C0086860
r-dist