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Effects of compounds 19 and 20 on iNOS and ICAM-1 mRNA expression in HepG2 cells. –: cells were treated without 10 μg/mL TNFα and compounds; +: cells were treated with 10 μg/mL TNFα only; + 0.1, 1, 10: cells were treated with 10 μg/mL TNFα and compounds.
