[Botanical origins of huangqi (Astragalus spp.) produced in Sichuan].
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D002681:China; D004340:Drug Contamination; D004365:Drugs, Chinese Herbal / Q000145:classification; D010598:Pharmacognosy; D010946:Plants, Medicinal / Q000033:anatomy & histology / Q000145:classification*
D004365:Drugs, Chinese Herbal