passages.id: split_4_validation_1135_passage
passages.type: progene_text
passages.text: Further , the expression of the catalytically inactive mutants of Ha-Ras , RhoA , c-Raf , and Erk2 or addition of the Mek1 - specific inhibitor PD 098059 abrogated the stimulation of the urokinase promoter by HGF / SF .