phagosome - vesicle formed from cell membrane that contains pathogen, lysosome - vesicle that contains digestive enzymes, lysozyme - digestive enzymes which hydrolyse the pathogen, phagocyte - white blood cell that engulfs pathogen, lymphocyte - white blood cell that recognises a specific pathogen, pathogen - microbe that causes disease (virus, fungi, bacteria), antigen - identity marker protein on cells which trigger an immune response, antibody - protein that destroys pathogens and gives us immunity, specific immune response - triggered by antigen to destroy a particular pathogen, non-specific immune response - Innate immune response, first line of defence, same for all pathogens, cell mediated immunity - carried out by T cells involves destruction of infected body cells, humoral immunity - carried out by B cells, involves production of antibodies to destroy pathogens,

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