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  • Title: Topography, architecture and structure of the plexus submucosus internus (Meissner) of the porcine small intestine in scanning electron microscopy.
    Author: Scheuermann DW, Stach W, Timmermans JP.
    Journal: Acta Anat (Basel); 1987; 129(2):96-104. PubMed ID: 3630610.
    Abstract:
    Scanning electron microscopy of whole-mount preparations of the tela submucosa in the porcine small intestine, examined after trypsin digestion, fixation and HCl hydrolysis, visualized a clear differentiation of the submucosal plexuses, i.e., the plexus submucosus internus (Meissner) and the plexus submucosus externus (Schabadasch). The distinctive features refer to the topography, number, size and shape of the ganglia and the number and diameter of the nerve strands. The plexus of Meissner is closely apposed to the external surface of the lamina muscularis mucosae by the enveloping connective tissue and by connecting strands penetrating the lamina muscularis mucosae. Three distinctive subdivisions of connecting strands can be identified. Since the glial cells covering the ganglia and connecting strands have been preserved, neither individual neuronal cells nor axons can be observed.
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