Extracellular Growth factor Engages with and dimerizes specific receptors on cell surface mages removed due to copyright reasons Please see Figure 1 in Zwick, E, J. Bange and A Ulrich Dimerized receptor Receptor Tyrosine Kinases as Targets for Anticancer Drugs Trends Mo/ Med. 8, no 1(Jan 2002): 17-23 activates cascade of molecular events Machinery for increased cell proliferation is mobilizedExtracellular Growth factor Engages with and dimerizes specific receptors on cell surface Dimerized Receptor activates cascade of molecular events Machinery for increased cell proliferation is mobilized Images removed due to copyright reasons. Please see Figure 1 in Zwick, E., J. Bange and A. Ullrich. Trends Mol Med. 8, no.1 (Jan 2002): 17-23. "Receptor Tyrosine Kinases as Targets for Anticancer Drugs