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Figure 6 Effects of SU11218 on platelet-derived growth factor receptor-beta (PDGFR-ß) phosphorylation. The SU11218 inhibited phosphorylation of the PDGFR-ß in a dose dependent manner. The lower panel shows equal protein loading of PDFGR-ß. IP = immunoprecipitation; pY = phosphorylated PDGFR-beta; WB = Western blot.