Summary
The ontogeny and distribution of immunoreactive motilin and secretin were studied in the gastro-entero-pancreatic (GEP) system of human fetuses, aged 5–24 weeks, using an indirect immunocytochemical method. Several controls to check for the specificity of the immunoperoxidase staining were performed. The first motilin- and secretin-containing cells were observed in the duodenal and jejunal mucosa in fetuses at a gestational age of 16 weeks. These immunoreactive cells were located in the glands of Lieberkühn and in the villi. No immunoreactive cells were present in the oxyntic and pyloric mucosa, ileum, colon and endocrine pancreas. These observations indicate that the motilin- and secretin-containing cells detected by our antisera appear (i) in the same organs of the fetus where they are also detectable in the adult, and (ii) after the completion of histogenesis of the gastro-entero-pancreatic (GEP) system.
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Leduque, P., Paulin, C., Chayvialle, J.A. et al. Immunocytological evidence of motilin- and secretin-containing cells in the human fetal gastro-entero-pancreatic system. Cell Tissue Res. 218, 519–527 (1981). https://doi.org/10.1007/BF00210111
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DOI: https://doi.org/10.1007/BF00210111