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Table 2 Half-maximal inhibitory concentration (IC50) and selective index (SI) of silymarin and baicalein

From: Antiviral activity of silymarin in comparison with baicalein against EV-A71

Compound

Quantification

Comprehensive Assay

Virucidal Assay

IC50 (μg/mL)

SI

IC50 (μg/mL)

SI

Silymarin

Plaque assay

7.99 ± 3.0

20.05

15.2 ± 3.53

10.53

Baicalein

Plaque assay

2.27 ± 4.93

185.6

30.88 ± 5.50

13.64

  1. IC50 refers to 50% inhibitory concentration required to inhibit the virus. SI is a selectivity index (CC50/IC50)