Category:
Other Excipients
CAS NO:
-
Standard:
In-house Standards,
A liposome is an artificially-prepared vesicle composed of a lipid bilayer. The liposome can be used as a vehicle for administration of nutrients and pharmaceutical drugs.
However, one of the drawback is that most liposomes intravenously injected into animals are rapidly removed from the blood circulation by uptake primarily in the cells of reticuloendothelial system (RES). It has been found that PEG-liposome are not readily taken up by the macrophages in the RES and hence stay in the circulation for a relatively long period of time.