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Pharm2812 Exam SECTION B: SHORT ANSWER QUESTIONS1. Give four non-specific host defence mechanisms. Explain how each acts to keep us healthy. Mechanism and Explanation: Non- specific host defences protect us against any pathogen regardless of species. They can be physical, chemical or biological:Physical Barriers:Skin:Dry, acidic environment helps prevents growthDead cells (keratin cells)discourage colonisationNormal flora of.
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Growthdead CellsMajor FactorsNon-Specific Host Defence MechanismsPhysical Barriers