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Xenograft growth kinetics. Two xenografts derived from the previous generation (P2) were grafted into 2 mice simultaneously (P3). Once the tumor was palpable (week 6), treatment began with intraperitoneal bevacizumab (5 mg/kg) or saline control. Tumor growth was measured with calipers weekly. The bevacizumab-treated xenograft showed dramatic tumor regression compared to saline control.
