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biology topic 3 (vaccinations (very small amounts of inactive pathogens,…
biology topic 3
vaccinations
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injected, body recognises foreign antigens
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antibodies remembered by body, excreted - no longer needed
when pathogen enters again, body remembes antibodies and creates more antibodies
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viral diseases
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HIV
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unless controlled by antiretrovial drugs, attacks immune cells
late stage HIV = AIDS - immune system so badly damaged, can't deal with other infections
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bacterial diseases
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salmonella
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causes vomiting, diarrhoea, fever, abdominal pain
gonorrhoea
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causes dark green discharge, urination pain
could be treated with penicillin, resistant strains appeared
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white blood cells
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lymphocytes
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antibodies - connect to antibodies, cause pathogens to clump together for easier phagocytosis
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