clusters of calcium oxalates

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Liang L, Zhao Z, Kang T. Application of microscopy technique and high performance liquid chromatography for quality assessment of Polygonum multiflorum Thunb. (Heshouwu). Pharmacognosy Magazine [Internet]. 2014;10(40):415-421. https://www.ncbi.nlm.nih.gov/pubmed/25422540