Mechanisms and roles on phagocytosis of microbes and altered self cells

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Elimination of unwanted cells by phagocytosis is the cellular innate immunity, and its molecular mechanism and role have remained to be elucidated. In this study, we found out the intracellular signaling through Draper, a phagocytic receptor we have detected. We also identified Draper ligand in Drosophila apoptotic cells and bacteria, and suggested that the phagocytic receptor in innate immunity acts as a multi ligand-receptor. On the other hand, we identified bacterial factors that influenced with host cellular and humoral immunity, and examined bacterial strategy to escape from the host immune responses.