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Rhizoma Paridis saponins (RPS) with a good antitumor effect in clinical use showed low bioavailability and toxicity. Combination of Rhizoma Curcuma longa with RPS, which called LouHuang preparation (LH), not only overcame the RPS limitations but also improved its anticancer effect. The median lethal dose (LD 50 ) of LH in mice was 3410.9mg/kg by oral acute toxicity test. LH relieved the inhibition...
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