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keratin pearl

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia, Hutchinson 0.02 sec.
keratin pearl
n.
A focus of central keratinization found within concentric layers of abnormal squamous cells, occurring in squamous cell carcinoma. Also called epithelial pearl.

keratin
a scleroprotein which is the principal constituent of epidermis, hair, nails, horny tissues, and the organic matrix of the enamel of the teeth. Its solution is sometimes used in coating pills when the latter are desired to pass through the stomach unchanged.

keratin cyst
see horn cyst.
keratin pearl
see horn pearls.
keratin tag
see fibrovascular papilloma.


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They have abundant eosinophilic cytoplasm, but they rarely show keratin pearl formation or dyskeratosis.
intracellular bridges, keratin pearls, and reactivity to markers for high-molecular-weight keratin), it is also made up of melanin-containing cells.
 
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