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Photomicrographs demonstrating incidental findings. (A) Raft of epithelial cells (arrows) forming microthrombus within a pulmonary vessel of a chronically infused rat. Hematoxylin and eosin stain; magnification, ×200. Photo courtesy of Igor Mikaelian. (B) Hair shaft embedded centrally within pulmonary microthrombus of rat receiving a bolus IV injection. Hematoxylin and eosin stain; magnification, ×400. Photo courtesy of Heather Workman.
