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  • Title: Morphological and functional polarity of an epithelial thyroid cell line.
    Author: Nitsch L, Tramontano D, Ambesi-Impiombato FS, Quarto N, Bonatti S.
    Journal: Eur J Cell Biol; 1985 Jul; 38(1):57-66. PubMed ID: 2992984.
    Abstract:
    The thyroid epithelial cell line FRT in monolayer culture appeared to be strongly polarized by morphological criteria. Cells were connected by tight junctions, exposed microvilli toward the culture medium and formed domes at confluency. FRT cells were infected with vesicular stomatitis virus (VSV) and Sindbis virus and the budding polarity was examined 8 and 16 h after infection, respectively. VSV budding occurred preferentially from the basolateral domain of plasma membrane, while Sindbis virus budding was mostly apical. The distribution of VSV and Sindbis virus glycoproteins, as determined by the immuno-gold technique, correlated well with the budding polarity. Polarized budding was not observed in isolated cells in suspension.
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