the present work , for the first time , demonstrates ( i ) the mrna levels on a molar basis for two highly homologous g-protein-linked receptors expressed in a single cell , ( ii ) independent regulation of their mrna levels that correlates well with receptor expression , and ( iii ) , that it is differentiation in 3t3-l1 cells per se and not treatment with glucocorticoid or ibmx alone that promotes the up-regulation of the beta 2-receptor transcripts and down-regulation of beta 1-receptor transcripts .
C0007634
cell
C0007589
differentiation