Masson’s trichrome staining (× 100 magnification). FC fibrotic control, T70 CCl4 + carvacrol 70 mg/kg, C70 olive oil + carvacrol 70 mg/kg, VC olive oil alone, HC normal saline alone. FC group; many bundles had grown into the lobules and connected the central and portal areas; T70 group, collagen deposition is markedly reduced in rats treated with carvacrol. C70, VC and HC groups, no fibrosis