The antimicrobial ability of propolis has been widely researched and demonstrated by Bretz et al, Koo et al, Hegazi AG, El Hardy FK as well as Drago M et al.
La capacidad antimicrobiana del propóleo ha sido ampliamente estudiada y demostrada por Bretz y su grupo; Koo y asociados; Hegazi AG, El Hady FK, Drago M y colegas.