Table 3.

Antiviral activities of selected Thymus capitata extracts against bovine herpesvirus type1

Extract	Yield a (%)	CC 50 b (μg ml −1 )	IC 50 c (μg ml −1 )	SI d
Essential oil	1	48.70	3.36	14.49
Ethanolic extract	10.05	189	47.80	3.95
Aqueous extract	3.25	298	164	1.81

^a% w/w = g of extracts 100 g⁻¹ of dried and ground plant material.

^bCytotoxic concentration 50%; ^c: inhibitor concentration 50%;

^dSelectivity index = CC₅₀/IC_50.