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proliferation |
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proliferation /pro·lif·er·a·tion/ (pro-lif″er-a´shun) the reproduction or multiplication of similar forms, especially of cells.prolif´erativeprolif´erous
proliferation [-lif′ərā′shən] Etymology: L, proles, offspring, ferre, to bear the reproduction or multiplication of similar forms. The term is usually applied to increases of cells or cysts. proliferate, v., proliferative, prolific, adj. proliferation (prōlif´ n growth by reproduction of similar cells. proliferation, epithelial, n a characteristic finding in inflammatory lesions affecting the gingival tissues; consists of hyperplasia of the pocket epithelium, with extension and elongation of epithelial rete pegs into the submucosa. Accompanying the hyperplastic changes in the crevicular epithelium, it is noticed that the epithelial attachment proliferates onto and alongside the cementum. Also, the multiplication of epithelial cells resulting either in increased thickness or new epithelial covering of a wound or an ulcer. See also pocket, periodontal. proliferation the reproduction or multiplication of similar forms, especially of cells. proliferation Multiplication of cells or organisms. See Autonomous proliferation, Cell proliferation, Systemic immunoblastic proliferation. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The recognition that the uniform round cell population is cytokeratin negative, neuroendocrine marker negative, and TTF-1 positive alongside a cuboidal epithelial proliferation that has a more typical type II pneumocyte profile makes this neoplasm sufficiently distinctive to exclude the other tumors in its differential diagnosis. Basically, a tympanic membrane perforation closes by a process of circumferential epithelial proliferation followed by connective tissue growth. Disordered epithelial proliferation has been linked to the development of BPD in a number of animal models (46, 47). |
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