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Hidden Guests: Migrating Cells and How the New Sci Doug Wilhelm and a micro-ribbed one for[A] fascinating book. . . . [Barnoud] ruminates on how microchimerism might change our understanding of ourselves. Sam Kean, Wall Street Journal What if some of your cells were not your own? What if they once belonged to someone else? Part mind bending medical mystery part cutting edge science Hidden Guests uncovers the astonishing phenomenon of microchimerism: the presence of foreign cells inside our own bodies. The incredible story of how those