Tissue
basement membrane
base·ment mem·brane
Subclass of:
Tissue membrane;
Epithelium
Definitions related to basement membrane:
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A collagen-containing extracellular matrix consisting of a thin layer of dense material found in various animal tissues interposed between the cells and the adjacent connective tissue. It consists of the basal lamina plus an associated layer of reticulin fibers.Gene Ontology DictionaryGene Ontology Consortium, 2021
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A darkly stained mat-like EXTRACELLULAR MATRIX (ECM) that separates cell layers, such as EPITHELIUM from ENDOTHELIUM or a layer of CONNECTIVE TISSUE. The ECM layer that supports an overlying EPITHELIUM or ENDOTHELIUM is called basal lamina. Basement membrane (BM) can be formed by the fusion of either two adjacent basal laminae or a basal lamina with an adjacent reticular lamina of connective tissue. BM, composed mainly of TYPE IV COLLAGEN; glycoprotein LAMININ; and PROTEOGLYCAN, provides barriers as well as channels between interacting cell layers.NLM Medical Subject HeadingsU.S. National Library of Medicine, 2021
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Extracellular matrix characteristically found under epithelial cells.CRISP ThesaurusNational Institutes of Health, 2006
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Ubiquitous supportive tissue adjacent to epithelium and around smooth and striated muscle cells. This tissue contains intrinsic macromolecular components such as collagen, laminin, and sulfated proteoglycans. As seen by light microscopy one of its subdivisions is the basal (basement) lamina.NCI ThesaurusU.S. National Cancer Institute, 2021
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