#mononuclear_phagocyte_system__mononuclearphagocytesystem__MPS__system_of_macrophages  a widely distributed system of free and fixed macrophages derived from bone marrow
  supertype:  #system.body_part  a group of physiologically or anatomically related organs or parts; "the body has a system of organs for digestion"
  part of:  #reticuloendothelial_system__reticuloendothelialsystem__RES  a widely distributed system consisting of all the cells able to ingest bacteria or colloidal particles etc, except for certain white blood cells
     part of:  #immune_system  a system (including the thymus and bone marrow and lymphoid tissues) that protects the body from foreign substances and pathogenic organisms by producing the immune response

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