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If macrophages kill and digest pathogens directly, then why does an immune response need to take place to kill antigens? Aren't antigens located on the pathogens?

If macrophages kill and digest pathogens directly, then why does an immune response need to take place to kill antigens? Aren't antigens located on the pathogens?
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If macrophages kill and digest pathogens directly, then why does an immune response need to take place to kill antigens? Aren't antigens located on the pathogens?

User Stldoug
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yes antigens are located on pathogens but sometimes both are harmful
User Gremo
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