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  • Title: A re-evaluation of the role of macrophages in carrageenan-induced immunosuppression.
    Author: Rumjanek VM, Watson SR, Sljivić VS.
    Journal: Immunology; 1977 Sep; 33(3):423-32. PubMed ID: 332622.
    Abstract:
    Administration of a single dose of 1 mg carrageenan to mice cause a temporary blockade of hepatic phagocytosis of 51Cr-labelled sheep erythrocytes (SRBC) and a prolonged reduction in the number of splenic plaque-forming cells (PFC) against SRBC. The in vitro responses to phytohaemagglutinin (PHA) and SRBC were also suppressed, whereas the response to the T cell-independent antigen DNP-Ficoll was not affected. Other in vitro experiments have shown that responses of normal cells can be actively suppressed by macrophages from carrageenan-treated mice and the possible mechanisms of this suppression are discussed.
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