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. 2016 Jun 10;36(3):369–376. doi: 10.1016/S0254-6272(16)30051-6

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© 2016 Traditional Chinese Medicine Periodical Press

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Direct virucidal effect of pure compounds and bioactive fractions from Banlangen (Radix Isatidis) extract on influenza virus (FM1, × 100)

A: cell control; B: virus control; C: CB (1: 2); D: Epigitrin (1: 16); E: PEP (1: 2); F: PEP + ALK + OA (1: 2); G: Ribavirin (1: 4). Cell control: normal MDCK cells without virus infection and drugs treatment; Virus control: cells infected with virus without drug treatments. CB: clemastanin B; PEP: phenylpropanoids portion; PEP + ALK + OA: the mixtures of phenylpropanoids, alkaloids and organic acid fractions.