Stimulation quantitation of saponins and sterones from Achyranthis Bidentatae Radix by high-performance liquid chromatography with double external standards calibration method
1. The MOE Key Laboratory for Standardization of Chinese Medicines and the SATCM Key Laboratory for New Resources and Quality Evaluation of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
2. Shanghai R & D Center for Standardization of Chinese Medicines, Shanghai 201203, China
3. Henan Engineering Center for Development of Genuine Medicinal Materials, Henan Academy of Traditional Chinese Medicine, Zhengzhou 450004, China
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