3. Discuss the effect of the following physiological changes on the effectiveness of the body’s immune response: a. Taking antacids on a regular basis. b. Changes caused by smoking in the cilia in the respiratory epithelium c. Cut or abrasion in the skin. 2. Explain how the body tries to prevent pathogenic entry into the body 2.3. Evaluate factors that affect the efficiency of the body’s first line of defence

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