Involvement of the Ras/MAPK Signaling Pathway in the Modulation of Urokinase Production and Cellular Invasiveness by Transforming Growth Factor-beta(1) in Transformed Keratinocytes - Santibanez, JF; Iglesias, M; Frontelo, P; Martinez, J; Quintanilla, M (Biochem Biophys Res Commun, 2000)