Pathogen that reproduces in body cells - Virus, Substances bacteria produce that make us ill - Toxins (poisons), Antibiotics - Type of medicine/drug that kills bacteria, Penicillin - First antibiotic discovered, Pathogen - A microorganism which causes an infectious disease, Example of a painkiller - Paracetamol, Antitoxins - Made by white blood cells to neutralise toxins , Cells that respond to infections - White blood cells, Antibodies - Made by white white blood cells. They bind to antigens and destroy pathogens , Ingest pathogens - White blood cells engulf and destroy pathogens, Painkillers - Used to relieve symptoms/pain. Do not kill pathogens, Resistant strain - Type of bacteria unaffected by antibiotics (eg MRSA), Vaccine - Contains weak/dead pathogen or its antigens,

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