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Chap. 18 - Immune system

Chap. 18 - Immune system - What about the flu Bioethical...

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The immune system Chapter 18
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How many of these do you recognize?
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Antibiotics Benefits Can treat bacterial infections Problems Populations of bacteria can become resistant, especially when the entire course is not finished Not effective against viruses (like colds)
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methicillin resistant staphylococcus aureus (MRSA) Treating a foot abcess with maggots
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Ticks can carry bacteria
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Viral pathogens
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Vaccines exist for a number of viral diseases (chicken pox, small pox, hepatitis, influenza) Some parents refuse to have their children vaccinated. Should these parents be forced to allow their children to be vaccinated to protect society against the reemergence of once-deadly killers such as polio?
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Unformatted text preview: What about the flu? Bioethical question: Eukaryotic pathogens How are pathogens transmitted? Your body has three lines of defense Your skin is the first line of defense Your body has three lines of defense Macrophages will destroy anything that they recognize as “non-self” Inflammation Your body has three lines of defense Particular B-cells and T-cells multiply when “their” antigen is introduced So what can go wrong… • Underactive immune system – HIV infection – Transplant patient on anti-rejection drugs • Overactive immune system (Autoimmune diseases) – Lupus – Arthritis – Allergies – Multiple sclerosis...
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