What will happen if harmful microorganisms or substances enter your body? How do you feel?
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if pathogens will enter our body they will cause us a disease and to fight with it and make it go away our immune system fights and a process called immunisation is taken place which make our body weak and uncomfortable untill the pathogen is not killed
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An infection can be seen as a battle between the invading pathogens and the host. Our bodies are equipped to fight off invading microbes that may cause disease. These are called our natural defences
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