Abstract
Extracellular tumor material including exosomes, microvesicles and apoptotic tumor debris may help cancers invade new organs. Enhancing the removal of extracellular tumor material by immune cells represents a novel immunotherapy approach for preventing cancer metastasis. This protocol quantifies the uptake and removal of extracellular tumor material from circulation and tissues by immune cells. In this assay fluorescent tumor cells are transferred into mice, and then immune cells are quantified by either flow cytometry or imaging cytometry for their uptake of tumor material.
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