In X. laevis, the homolog of mammalian TFF1 is xP1 (Hauser and Hoffmann, 1991; Hoffmann and Hauser, 1993a) and the functional equivalent of mammalian TFF2 seems to be xP4.1 consisting of four TFF domains arranged in tandem (Hauser and Hoffmann, 1991; Jagla et al., 1998). It has all the precious stem cells on the surface. Found an error? The principal cellular constituents of corpus units include the surface mucous (pit/foveolar) cells, acid-secreting parietal cells, mucous neck cells, digestive-enzyme secreting (zymogenic) chief cells, endocrine cells, and isthmal cells with undifferentiated features that likely serve as multipotent stem cells. Robert Lewis Maynard, Noel Downes, in Anatomy and Histology of the Laboratory Rat in Toxicology and Biomedical Research, 2019.
MUC5AC and MUC5B were found in 95.4% and 100% of 16 gallbladder bile samples, respectively [134]. Mucus in the nose helps to trap dust, bacteria, and other small inhaled particles. Mucous Cells.
Figure 12.4. Cardiac epithelium with chronic inflammation in the lamina propria.
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These two peptides share 89% similarity and are encoded by two different genes probably originating from a duplication of the X. laevis genome about 30 million years ago (Hauser and Hoffmann, 1991; Botzler et al., 1999). Structures and functions of the human digestive system, General features of digestion and absorption, Digestion and absorption of specific nutrients, The gastrointestinal tract as an organ of immunity, Embryology and evolution of the vertebrate digestive system, Mayo Clinic - See How Your Digestive System Works, LiveScience - Digestive System: Facts, Function and Diseases, Cleveland Cliinic - Diseases and Conditions - Digestive System, National Institute of Diabetes and Digestive and Kidney Diseases - Your Digestive System and How It Works, Agency for Toxic Substances and Disease Registry - Gastrointestinal, digestive system - Children's Encyclopedia (Ages 8-11), digestive system - Student Encyclopedia (Ages 11 and up). By continuing you agree to the use of cookies. Foveolar type of cardiac epithelium is more common. Surface mucous cell on the stomach lumen secreting mucus (pink stain). These glands, their development and duct structure, have been studied in detail (May and Tucker, 2015). 12-21). Double exposure reveals the localization of xP4 mainly in mucous neck cells (yellow) which are specifi-cally labeled by MPA binding. Cardiac epithelium always shows an expanded lamina propria with inflammatory cells and fibrosis (Fig. 1). cr. Gastric mucus forms a layer about one millimetre thick that lines the stomach, protecting the organ from highly acidic gastric juice and preventing the juice from digesting the stomach itself. Mucous cells are located on the surface and in the neck of the gastric glands (GGs). Staining with the polyclonal rabbit anti-xP4 antiserum (Hauser and Hoffman, 1991) and immunofluorescence with FITC label (green) followed by staining with TRITC-labeled lectin MPA (red). It is a viscous colloid containing inorganic salts, antimicrobial enzymes (such as lysozymes), immunoglobulins, and glycoproteins such as lactoferrin and mucins, which are produced by goblet cells in the mucous membranes and submucosal glands. There is a decreasing protein gradient from the fundus to the antrum (Fig. Inflammatory cells are lymphocytes with scattered plasma cells and eosinophils. Membrane-bound mucins (MUC1, MUC3A, MUC3B, MUC4, and MUPCDH) having a hydrophobic membrane-spanning domain are integral parts of the cell membrane and do not form mucous gel [134]. MUC5B and MUC6 are secreted from deeper mucous cells.
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