deletion-mutation studies using plasmid expression vectors containing either 246 , 170 , or 80 base pairs of the 5'-flanking region of the rat alpha-subunit gene fused to the coding region of the bacterial chloramphenicol acetyltransferase gene demonstrate 3,5,3'-triiodo-l-thyronine ( t3 ) -regulated expression in gh3 cells , a t3-responsive somatotrophic cell line .
C0079941
coding region
C0007634
cells