background and objectives: commiphora habessinica (o.berg) engl. (burseraceae), boswellia sacra flueck (burseraceae), phoenix dactylifera l. (arecaceae), and doronicum glaciale (wulfen) nyman (asteraceae) are of ethnomedicinal importance in persian folk medicine and are widely used to treat infectious diseases. the aim of the present study was to investigate the antimicrobial properties of thes...