Doxorubicinhydrochlorid i Caelyx er indkapslet i fine dråber, der kaldes pegylerede liposomer, der hjælper med at bringe medicinen fra blodbanen til cancervævet i højere grad end til sundt, normalt væv.
The doxorubicin hydrochloride in Caelyx is enclosed in tiny spheres called pegylated liposomes which help to deliver the medicinal product from the blood stream to the cancerous tissue rather than healthy normal tissue.