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Table 1 The CC50 and CC90 of extracts in Vero cells

From: Chinese herbal extracts with antiviral activity: evaluation, mechanisms, and potential for preventing PRV, PEDV and PRRSV infections

Substance

Cytotoxicity (mg/mL)

Concentration used for antiviral experiments (mg/mL)

CC90

CC50

Codonopsis pilosula

9.9 ± 0.21

43.0 ± 0.73

6.25

Ilex rotunda thunb

2.52 ± 0.07

5.54 ± 0.20

1.67

Astragalus membranaceus

 > 12.50

 > 12.50

6.25

Clerodendrum cyrtophyllum turcz

7.71 ± 0.89

48.73 ± 0.71

6.25

Taraxacum mongolicum

8.51 ± 0.11

16.82 ± 0.21

6.25

Andrographis paniculata

 > 13.50

 > 13.50

1.69

Echinacea

9.99 ± 0.28

20.34 ± 0.73

3.58

Ilex purpurea hassk

7.02 ± 0.06

13.16 ± 0.14

3.13

Ganoderma lucidum kars (ethanol)

6.29 ± 0.33

9.25 ± 0.16

2.50

Ganoderma lucidum kars (water)

7.47 ± 0.20

11.03 ± 0.31

5.00

Dioscorea opposite thunb

4.40. ± 0.01

40.2 ± 0.02

6.25

  1. The cytotoxic concentrations of 50% (CC50) and 90% (CC90)