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  • Title: Light microscopic localization of alkaline phosphatase in fetal bovine bone using immunoperoxidase and immunogold-silver staining procedures.
    Author: Morris DC, Randall JC, Anderson HC.
    Journal: J Histochem Cytochem; 1988 Mar; 36(3):323-7. PubMed ID: 3278058.
    Abstract:
    We localized alkaline phosphatase in the metaphyses of fetal bovine tibial bone by use of avidin-biotin-immunoperoxidase and immunogold-silver staining procedures. Low melting-point, paraffin-embedded sections of periodate lysine-paraformaldehyde-fixed undecalcified bone were used for immunostaining. We suggest that the combination of intact embryonic bone with this fixative and the immunohistochemical procedures used in this study may have helped to preserve antigenicity and thus to improve the efficiency of immunolabeling. Similar patterns of alkaline phosphatase localization were produced by the immunoperoxidase and immunogold-silver staining methods. The latter, although free of immunoreagents such as diaminobenzidine, must be monitored closely to avoid nonspecific staining during the silver enhancement procedure. Both methods revealed a concentration of the enzyme in osteoblasts and in areas of osteoid that lined the bone trabeculae. The results support the findings of earlier enzyme cytochemical studies in which osteoblasts were shown to have significant alkaline phosphatase activity.
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