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    The fine structure and cell kinetics of mouse epidermis after wounding.

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    Authors
    Potten, Christopher S
    Allen, Terence D
    Affiliation
    Paterson Laboratories, CHristie Hospital and Holt Radium Institute, Manchester
    Issue Date
    1975-03
    
    Metadata
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    Abstract
    A variable amount of cornified tissue removed from mouse dorsal epidermis results in stimulation of the entire basal layer. Stimulation does not appear to be dependent on damage to an indiviaual epidermal proliferative unit (EPU). The immediate reaction to wounding is a rapid movement of cells from the basal layer to the differentiating compartment resulting in depopulation of the basal layer, which is followed by a burst in DNA-synthetic activity. The result of the increased transit of cells through the epidermis is that various aspects of keratinization can appear abnormal. The Langerhans cells show several changes, often appearing suprabasal and becoming smaller, rounded cells with a less-clear cytoplasm and fewer granules. The initial migratory reaction results in a largely normal epidermis on the third day. This reaction is followed by a transient hyperplasia which reaches its peak on the sixth to seventh day and gradually returns to normal by the fourteenth to fifteenth day. The hyperplasia is characterized by a loss of the ordered stacking of cornified cells which become shorter and thicker than normal. There is a return to the stacked state beginning on the tenth day. The Langerhans frequency is apparently at its lowest on days 6-7 when the proliferation levels are at their maximum. An inverse relationship appears to exist between relative Langerhans cell frequency and cell proliferation rate. The data suggest that the frequency of Langerhans granules also changes during the course of the hyperplasia, peak levels being observed just before the decline in proliferative activity.
    Citation
    The fine structure and cell kinetics of mouse epidermis after wounding. 1975, 17 (3):413-47 J. Cell. Sci.
    Journal
    Journal of Cell Science
    URI
    http://hdl.handle.net/10541/199353
    PubMed ID
    1127026
    Type
    Article
    Language
    en
    ISSN
    0021-9533
    Collections
    All Paterson Institute for Cancer Research

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