an animal tissue consisting of one or more layers of closely packed cells covering the external and internal surfaces of the body. The cells vary in structure according to their function, which may be protective, secretory, or absorptive
Derived forms
epithelial (ˌepiˈthelial)
adjective
Word origin
C18: New Latin, from epi- + Greek thēlē nipple
Examples of 'epithelia' in a sentence
epithelia
However, its role in epithelia remains largely unknown.
Kazuhiro Okumura, Megumi Saito, Eriko Isogai, Yoshimasa Aoto, Tsuyoshi Hachiya, YasubumiSakakibara, Yoshinori Katsuragi, Satoshi Hirose, Ryo Kominami, Ryo Goitsuka, TakuroNakamura, Yuichi Wakabayashi 2014, 'Meis1 Regulates Epidermal Stem Cells and Is Required for Skin Tumorigenesis', PLoS ONE10.1371/journal.pone.0102111. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Cell shape changes within epithelia require the regulation of adhesive molecules that maintain tissue integrity.
Ana Margarida Mateus, Alfonso Martinez Arias 2011, 'Patterned Cell Adhesion Associated with Tissue Deformations during Dorsal Closurein Drosophila', PLoS ONE10.1371/journal.pone.0027159. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
In a detailed analysis of the phenotype, reduced cochlear turning and widened epithelia were observed.
Hyung Jin Kim, Hae-Mi Woo, Jihee Ryu, Jinwoong Bok, Jin Woo Kim, Sang Back Choi, Mi-HyunPark, Hyun-Young Park, Soo Kyung Koo 2013, 'Conditional Deletion of Pten Leads to Defects in Nerve Innervation and Neuronal Survivalin Inner Ear Development', PLoS ONE10.1371/journal.pone.0055609. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
They are produced by airway epithelia in response to infectious agents and proinflammatory cytokines.
M. Soledad Hielpos, Mariana C. Ferrero, Andrea G. Fernández, Josefina Bonetto, GuillermoH. Giambartolomei, Carlos A. Fossati, Pablo C. Baldi 2015, 'CCL20 and Beta-Defensin 2 Production by Human Lung Epithelial Cells and Macrophagesin Response to Brucella abortus Infection', PLOS ONE10.1371/journal.pone.0140408. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Microbicides will need to protect both digestive and follicle-associated epithelia.
Patricia Ribeiro dos Santos, Magali Rancez, Jean-Luc Prétet, Alice Michel-Salzat,Valérie Messent, Anna Bogdanova, Anne Couëdel-Courteille, Evelyne Souil, Rémi Cheynier,Cécile Butor 2011, 'Rapid Dissemination of SIV Follows Multisite Entry after Rectal Inoculation', PLoS ONE10.1371/journal.pone.0019493. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The two different epithelia were generally sharply demarcated.
Jai Hyang Go, Jeong Hee Hong, Gilho Lee 2012, 'Atypical Epidermoid Cyst in Renal Pelvis and Histogenetic Implications', International Neurourology Journalhttp://www.einj.org/upload/pdf/inj-16-4-205-9.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Interestingly, some part of squamous epithelia contained uroplakin-positive and manymore cytokeratin 7-positive cells.
Jai Hyang Go, Jeong Hee Hong, Gilho Lee 2012, 'Atypical Epidermoid Cyst in Renal Pelvis and Histogenetic Implications', International Neurourology Journalhttp://www.einj.org/upload/pdf/inj-16-4-205-9.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The mucosal epithelia in the oesophagus has longitudinal branched folds with frontward and hindmost zones.
Hameeda Kalhoro, Shengli Tong, Lei Wang, Ying Hua, Josie Ancella Volatiana, QingjunShao 2018, 'Morphological study of the gastrointestinal tract of Larimichthys crocea (Acanthopterygii:Perciformes)', Zoologia (Curitiba)http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702018000100342&lng=en&tlng=en. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Using this measure we show that excitable epithelia can spontaneously exhibit body-scale patterns of activation.
Oltman Ottes De Wiljes, Ronald A. J. van Elburg, Michael eBiehl, Fred A. Keijzer 2015, 'Modeling spontaneous activity across an excitable epitheliumSupport for a coordinationscenario of early neural evolution', Frontiers in Computational Neurosciencehttp://journal.frontiersin.org/Journal/10.3389/fncom.2015.00110/full. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)