cells and the immune system 0.0 / 5 ? BiologyBiologyAll LevelsAQA Created by: paige17Created on: 21-04-23 12:31 what are antigens? molecules (usually proteins) that can generate an immune response when detected by the body 1 of 7 where are antigens normally found? on the surface of cells 2 of 7 what are antigens used for within the immune system? to identify pathogens, abnormal body cells, toxins and cells from individuals of the same species (e.g. organ transplants) 3 of 7 what are pathogens? organisms that cause disease 4 of 7 what do phagocytes do? they recognise foreign antigens on a pathogen 5 of 7 what does the membrane of the phagocyte then do? it projects out and then the cytoplasm of the phagocyte moves round the pathogen (engulfing it) as it's enclosed in a phagocytic vacuole 6 of 7 what organelle fuses with the phagocytic vacuole which then releases enzymes into the vacuole? lysosomes 7 of 7
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