Healing of full-thickness cutaneous wounds in the pig. I. Immunohistochemical study of epidermodermal junction regeneration



In order to determine the kinetics of epidermo-dermal junction (EDJ) regeneration during wound healing, we studied the regeneration of five EDJ components during reepidermization. Cutaneous wounds (50-mm length, 2-mm width, and 5-mm depth) were produced on the flank area of two pigs and left unsutured. Daily biopsies from day 1 to day 20 were studied by light microscopy on paraffin-embedded sections and by indirect immunofluorescence on cryostat sections using human sera to bullous pemphigoid antigen (BPA) with specificity previously confirmed by indirect immuno-electron microscopy, rabbit antisera to type IV collagen (Coll IV) and to fibronectin, and the monoclonal antibodies (MoAb) 4C 12-8 to laminin and NP-76 to type VII collagen (Coll VII).

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