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EVs from sheep reticulocytes. An early electron micrograph (123,000X) of EVs purified by Pan and Johnstone. Reprinted from Pan and Johnstone, “Fate of the Transferrin Receptor during Maturation of Sheep Reticulocytes In Vitro: Selective Externalization of the Receptor,” Cell, 33:967–977 (1983), with permission from Elsevier.
