Short-term sunitinib treatment did not affect tumor growth. Tumor size versus time for untreated and sunitinib-treated A-07-GFP (A-B) and R-18-GFP tumors (C). Points, means of 6-10 tumors; bars, SEM. Dotted line indicates time of treatment start. Tumors were initiated 6 (A-07-GFP; A-B) or 12 days (R-18-GFP; C) before start of treatment.