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  • Title: Macrophages of athymic nude mice: Fc receptors, C receptors, phagocytic and pinocytic activities.
    Author: Vĕtvicka V, Fornůsek L, Holub M, Zídková J, Kopecek J.
    Journal: Eur J Cell Biol; 1984 Sep; 35(1):35-40. PubMed ID: 6489358.
    Abstract:
    Expression of Fc receptors (FcR) for IgG1, IgG2A, IgG2B, IgM, IgA and IgE, binding of C3 and C5 complement components and phagocytic and pinocytic activities were determined in peritoneal and omental macrophages of nu/nu, nu/+ and +/+ Balb/c mice. nu/nu mice showed a higher proportion of FcR and complement receptor-bearing peritoneal macrophages along with a significantly higher phagocytic activity of peritoneal macrophages both in vitro and in vivo. Tests of pinocytic activity in these cells and phagocytic activity in omental phagocytes yielded similar results. We conclude that athymic mice compensate their immune defects by a higher phagocytic activity of their professional phagocytes and a higher expression of receptors mediating this process.
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