Extracellular Vesicles, Volume 645 in the Methods in Enzymology series, continues the legacy of this premier serial with quality chapters authored by leaders in the field. Chapters in this new release include Genetic labeling of extracellular vesicle exosomes for studying biogenesis and uptake in living mammalian cells, Fluorescent Labeling of Extracellular Vesicles, Isolation of extracellular vesicles from lymph, Transgenic rats for tracking body fluid/tissue-derived extracellular vesicles, Isolation of amniotic extracellular vesicles, Urinary extracellular vesicle isolation, Immunocapture-based ELISA to Characterize and Quantify Extracellular Vesicles in Both Cell Culture Supernatants and Body Fluids, and much more.