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Table 4 Delta Ct values - comparison with the virus control by real-time RT-PCR assay

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

No. Plant extract Delta Ct values x
1:2 CC50 1:4 CC50 1:8 CC50
1. Satureja montana 14.06 ± 2.501 3.82 ± 0.952 3.32 ± 0.652
5. Origanum vulgare 13.28 ± 2.731 7.40 ± 1.012 6.36 ± 1.012
6. Mentha piperita 18.32 ± 2.771 8.24 ± 1.062 7.70 ± 1.822
8. Melissa officinalis 12.49 ± 2.331 8.41 ± 2.222 2.71 ± 0.943
11. Thymus vulgaris 12.65 ± 1.001 11.70 ± 1.171 2.66 ± 0.772
12. Hyssopus officinalis 10.02 ± 2.501 5.33 ± 2.102 2.03 ± 1.103
15. Salvia officinalis 8.25 ± 1.861 6.65 ± 1.191 1.95 ± 1.192
16. Desmodium canadense 16.41 ± 2.441 10.58 ± 2.822 6.21 ± 0.642
  1. xCt of IBV was 18.50 ± 1.66; 1, 2 and 3 means that the difference within the group was statistically significant (P < 0.05)