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Table 2 Anti-IBV activity of some plant extracts in Vero cell cultures

From: In vitro antiviral activity of fifteen plant extracts against avian infectious bronchitis virus

No. Plant extract CC50 (μg)a EC50 (μg)b SI
1. Satureja montana 0.75 0.044 17.0
5. Origanum vulgare 0.52 0.008 65.0
6. Mentha piperita 0.27 0.004 67.5
8. Melissa officinalis 0.59 0.015 39.3
11. Thymus vulgaris 0.63 0.010 63.1
12. Hyssopus officinalis 0.64 0.076 8.4
15. Salvia officinalis 0.11 0.003 36.7
16. Desmodium canadense 0.29 0.017 17.1
  1. aThe assay for determination of CC50 was performed in octuplicate for each extract
  2. bThe experiments for determination of EC50 were repeated independently twice, and a mean is presented