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Kaplan-Meier survival curves of rats with BT4C brain tumors. Rats were inoculated with BT4C glioma cells. After 3 days, they were treated with either a single injection of DRz4 or DRz4r enzyme (A) (n=7). The effects of a continuous delivery of endostatin or a combination of the two treatment modalities are shown in B (n=7).
