Quality analysis of semi-cultivated Astragalus membranaceus var. mongholicus from Hunyuan County of Shanxi Province Quality analysis of semi-cultivated Astragalus membranaceus var. mongholicus from Hunyuan County of Shanxi Province Quality differences of medical material, raw decoction pieces, and processed products of Astragalus membranaceus var. mongholicus Comparative study on quality of Astragali Radix by two different planting patterns in major producing areas Effects of environmental factors on quality of wild Astragalus membranaceus var. mongholicus grown in Hengshan Mountain, Shanxi Province Effects of environmental factors on quality of wild Astragalus membranaceus var.mongholicus grown in Hengshan Mountain, Shanxi Province Correlation on quality and ecotype of Astragalus membranaceus var. mongholicus Optimization of extraction technology of two immune active proteins from Astragalus membranaceus var. mongholicus