Journal
TRENDS IN CELL BIOLOGY
Volume 13, Issue 4, Pages 169-176Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/S0962-8924(03)00036-9
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Funding
- NHLBI NIH HHS [HL55980] Funding Source: Medline
- NIAID NIH HHS [AI25144, AI36953, AI053194] Funding Source: Medline
- NIDDK NIH HHS [DK58061] Funding Source: Medline
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The most fundamental type of organization of cells in metazoa is that of epithelia, which comprise sheets of adherent cells that divide the organism into topologically and physiologically distinct spaces. Some epithelial cells cover the outside of the organism; these often form multiple layers, such as in skin. Other epithelial cells form monolayers that line internal organs, and yet others form tubes that infiltrate the whole organism, carrying liquids and gases containing nutrients, waste and other materials. These tubes can form elaborate networks in the lung, kidney, reproductive passages and vasculature tree, as well as the many glands branching from the digestive system such as the liver, pancreas and salivary glands. In vitro systems can be used to study tube formation and might help to define common principles underlying the formation of diverse types of tubular organ.
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