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    Glossary Epithelium

    type of tissue covering body surfaces and lining cavities

    Epithelium is a type of tissue that forms the outer layer of the body's surfaces and lines internal organs and cavities. It acts as a protective barrier and is involved in functions such as absorption, secretion, and sensation. For example, the skin's outer layer and the lining of the digestive tract are made up of epithelial cells.

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    1. Dedifferentiation of committed epithelial cells into stem cells in vivo Nature · 2013 · 551 citations
    2. Epithelial Stem Cells: Turning over New Leaves Cell · 2007 · 508 citations
    3. Keratin cytoskeletons in epithelial cells of internal organs Proceedings of the National Academy of Sciences · 1979 · 482 citations
    4. Plasticity of epithelial stem cells in tissue regeneration Science · 2014 · 479 citations
    5. Molecular Dissection of Mesenchymal–Epithelial Interactions in the Hair Follicle PLoS biology · 2005 · 417 citations
    6. Keratin 15 Promoter Targets Putative Epithelial Stem Cells in the Hair Follicle Bulge Journal of Investigative Dermatology · 2003 · 387 citations
    7. Defining the impact of β-catenin/Tcf transactivation on epithelial stem cells Genes & development · 2005 · 384 citations
    8. Coordinated Activation of Wnt in Epithelial and Melanocyte Stem Cells Initiates Pigmented Hair Regeneration Cell · 2011 · 260 citations
    9. Expression and function of FGFs-4, -8, and -9 suggest functional redundancy and repetitive use as epithelial signals during tooth morphogenesis Developmental dynamics · 1998 · 252 citations
    10. Patterns of expression of trichocytic and epithelial cytokeratins in mammalian tissues. I. Human and bovine hair follicles Differentiation · 1988 · 248 citations
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    Community 2

    1. Adipocyte lipolysis activates epithelial stem cells for hair regeneration through fatty acid metabolic signaling Reddit · 26 Oct 2025
    2. Comprehensive Microneedling Guide Reddit · 19 Aug 2022

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