Learned , Adaptive, Microorganisms, Bacteria, Nutrition, Exercize, Defense mechanism, Expels pathogens, Mucosal defense, Iga - immuongloubin , Triggers immune response , Identifies Pathogens, Misguided immune attack, The body attacks itself, Cellular recognition  , Presents antigens to T cells, Lymphatic organ, Spleen, Removes wastes and fluid , Supports immune functions, Body is responding, infection or injury, Bone marrow , Fights infection, Prepares the immune system , Safe exposure to a pathogen, Cell mediated response, Kill infected cells, Coordinates other cells, Activates B cells and cytotoxic T cells, Body defense strategy , Raises temperature to fight pathogens, immune proteins, Bind to and neutralize pathogens , Cellular eating, Phagocytosis, Imunne system respond, Inflammation occurs, Overreaction to a harmless substance, Pollen sensitivity .

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