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virus infection - Coggle Diagram

- - - - inject killed, modified, fragments of pathogen to host to elicit primary immune response, without causing disease
        
        prepare the immune system for future exposure to the pathogen
- - - - produce antibody
        
        antibody targets extracellular phases
        
        binds to the surface of virus and prevent the attachment of virus to the target cell
        
        type
        
        igA
        
        mucous protection (in epithelium)
        
        igG
        
        systemic protection (in blood)
    - - target intracellular phase
        
        by: seek out and destroy virus-infected cells