US Patent 9005888 Methods for microvesicle isolation and selective removal

The invention relates to compositions and methods for isolation of microvesicles produced by mammalian cells. These microvesicles, known as extracellular microvesicles or circulating microvesicles, are isolated from sample materials such as body fluids, or from cell culture media that has been used to culture and maintain mammalian cells in vitro. The isolation of microvesicles as described herein results in purification and concentration of the microvesicles.