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  • Title: The fine structure of the myoneural junctions in the body wall muscles in Branchiobdella pentodonta Whit. (Annelida, Oligochaeta).
    Author: Farnesi RM, Vagnetti D.
    Journal: Anat Rec; 1975 May; 182(1):91-101. PubMed ID: 1155793.
    Abstract:
    The ultrastructure of the myoneural junctions in the body wall muscles has been studied in Branchiobdella pentodonta Whit. A single junctional type has been found. Within the terminal axon there are two types of vesicles, which differ in number, size and electron opacity. The junctional gap contains the basement membrane. The post-junctional membrane displays concave patches on which slender projections arising from the outer lamina of the sarcolemma extend into the junctional gap. These concave patches overlie a cytoplasmic lamina made up of electron dense material.
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