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Epithelial
(redirected from epithelial layers)

   Also found in: Medical 0.01 sec.
ep·i·the·li·um  (p-thl-m)
n. pl. ep·i·the·li·ums or ep·i·the·li·a (-l-)
Membranous tissue composed of one or more layers of cells separated by very little intercellular substance and forming the covering of most internal and external surfaces of the body and its organs.

[New Latin epithlium : epi- + Greek thl, nipple; see dh(i)- in Indo-European roots.]

epi·theli·al adj.
ThesaurusLegend:  Synonyms Related Words Antonyms
Adj.1.epithelial - of or belonging to the epithelium; "epithelial layer"


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Immunoperoxidase profiles to differentiate dysplasia versus reactive, inflammatory or atrophy conditions of cervix or urothelium, thyroid markers to separate benign follicular thyroid lesions from malignant, and so forth, can be tricky on histology (and for cervix and urothelium may rely on a portion of the epithelial layers staining vs complete layer positivity) and can be even more problematic when used on cytology specimens.
The type B secretory cell has a mussel-like shape with a length of approximately 12 [micro]m, occupying areas from the epithelial layers to the connective tissue layer.
This abnormal persistence of cell nuclei in the superficial epithelial layers may represent incomplete squamous differentiation.
 
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