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  • Title: Sites of prealbumin production in the human fetus using the indirect immunoperoxidase technique.
    Author: Gray HD, Gray ES, Horne CH.
    Journal: Virchows Arch A Pathol Anat Histopathol; 1985; 406(4):463-73. PubMed ID: 2861684.
    Abstract:
    An indirect immunoperoxidase technique was used to investigate the site of prealbumin synthesis in the human fetus from between 8 and 43 weeks. Prealbumin staining was noted in the A cells of the fetal pancreas, both in the primary and secondary generations of the islets of Langerhans, from as early as 12 weeks gestation. Electron microscopy localized the staining to the cytoplasmic secretory granules. Prealbumin was also present in the gastrointestinal mucosa in cells which had a distribution similar to that of argentaffin cells. Positive staining was noted in the lining epithelium of the renal proximal convoluted tubules, but ultrastructural studies indicated that this was probably related to reabsorption, and not to synthesis.
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