The cell indicated by the arrow contains a reddish, ringlike structure, which is called a Cabot's ring. (Courtesy of Dr. Ayten Arcasoy of Ankara, Turkey.) Cabot's rings may be in the form of partial loops, loops, or figure eights. Their origin is not known and they may be artifacts. They are also rare. Cabot's rings may be present in lead poisoning, pernicious anemia, thalassemia, and other severe anemias.
Course Section: 02. Inclusions Found in Red Blood Cells
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