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1 Department of Anatomy, Washington University School of Dentistry, St. Louis, Mo.
Experimental wounds of the gingiva exhibit evidence of a marked augmentation of alkaline phosphatase activity in the outer layers of epithelium adjacent to the incision and in and surrounding the organizing fibrin clot in the lamina propria. The increased enzymatic activity in the region of the healing wound appears to be associated with: (1) the growth and function of outgrowing capillaries, (2) the activity of fibroblasts in connection with the development of connective tissue fibers, (3) the activity of macrophages within and around the lesion, and (4) keratinization proceeding from the margins of the epithelial cicatrix.
Submitted on March 14, 1952
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