1,2-distearoylphosphatidylethanolamine 1G4B5265CQ 2462-63-7 3WJQ0SDW1A 80168379AG 97C5T2UQ7J Antineoplastic Agents Cholesterol Dendrimers Doxorubicin Journal Article Micelles Phosphatidylethanolamines Polyethylene Glycols Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. biomedical applications dendrimers dioleoyl phosphatidylethanolamine drug delivery lipids nanomedicine self-assembly