In vivo anti-avian influenza virus activity of Qingkailing and Shuanghuanglian Orals Selective flocculation processing technology of chitosan complex flocculant on Shuanghuanglian aqueous extract Study on in situ intestinal absorption of active ingredients in Shuanghuanglian oral liquid in rats In vivo and in vitro correlation of quality control components in Shuanghuanglian Oral Liquid HPLC specific chromatogram spectrum-effect relationship for Shuanghuanglian on MDCK cell injury induced by influenza A virus (H1N1)