the transforming growth factor with the soft agar colony-forming activity when assayed in the presence of mouse epidermal growth factor on normal rat kidney clone 49f indicator cells , but without mitogenic action to quiescent 3t3 cells , does not compete with epidermal growth factor for receptor binding , is heat and acid resistant but trypsin and dithiothreitol sensitive , and therefore is of the transforming growth factor-beta class .
C0040691
transforming growth factor
C0018284
mitogenic