Cabot rings are thin, red-violet staining, threadlike strands in the shape of a loop or figure-8 that are found on rare occasions in red blood cells (erythrocytes). They are believed to be microtubules that are remnants from a mitotic spindle, and their presence indicates an abnormality in the production of red blood cells.
Cabot rings appear as ring, figure-8 or loop-shaped structures on microscopy. Cabot rings stain red or purple with Wright's stain.
- Kass, L (July 1975). "Origin and composition of Cabot rings in pernicious anemia.". American Journal of Clinical Pathology. 64 (1): 53–7. PMID 1155375.
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