the chloramphenicol acetyltransferase activity of the upstream human tgf-beta 1 promoter-chloramphenicol acetyltransferase gene is increased 8- to 10-fold by treatment of cells with tgf-beta 1 , whereas that of the second promoter is increased approximately 3- to 4-fold .
C0086418
human
C1366557
tgf-beta 1