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  • Title: Fine structure of Merkel corpuscles in the lingual mucosa of Japanese quail, Coturnix coturnix japonica.
    Author: Toyoshima K, Seta Y, Shimamura A.
    Journal: Arch Oral Biol; 1993 Nov; 38(11):1009-12. PubMed ID: 8297254.
    Abstract:
    By electron microscopy, these corpuscles were found exclusively in the connective tissue just beneath the dorsal epithelium near the lateral margin of the tongue. Each consisted of 4-8 Merkel cells and flattened nerve terminals arranged alternately. The Merkel cell was characterized by dense-cored granules, with a diameter ranging from 120 to 180 nm, throughout the cytoplasm. The functional significance of the avian Merkel cell, i.e. a mechanoreceptor cell or a trophic cell with the axon, still remains enigmatic, as is the case with Merkel cells of other vertebrates.
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