transforming growth factor beta ( tgf-beta ) at picomolar concentrations has been previously shown to induce striking alterations of bovine adrenocortical cell differentiated functions , without detectable effect on growth activity ( feige , j.j. , cochet , c. , and chambaz , e. m. ( 1986 ) biochem . biophys . res . commun . 139 , 693-700 ; hotta , m. , and baird , a . ( 1986 ) proc . natl . acad . sci . u. s. a . 83 , 7795-7799 ) .
C0040690
transforming growth factor beta
C0007589
differentiated