the role of the cyclic-amp ( camp ) responsive element ( cre ) in eukaryotic gene transcription was investigated in several cell lines transfected by constructs containing the chloramphenicol acetyltransferase ( cat ) gene linked to the three different promoters , simian virus ( sv ) 40 , human c-ha-ras-1 , or chicken beta-actin promoter , with or without cre .
C0086418
human
C0034678
ras