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Paclitaxel (Taxol), a naturally occurring antineoplastic agent, stabilizes tubulin polymerization, resulting in arrest at the G2/M phase of the cell cycle and apoptotic cell death[1][2].

Paclitaxel (20 nM; 48 hours) induces programmed cell death and exists a block at the G2/M phase of the cell cycle[1].Paclitaxel (20 nM; 48 hours) induces a consistent increase in the level of p53[1].

Paclitaxel (1-20 mg/kg; i.p.; 1 time/2 days for five cycles) obviously induces liver metastases at the low-Paclitaxel group with little influence on primary tumor growth[3].

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