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Questions and Answers
What happens to tubercle bacilli within macrophages during the first 3 weeks after exposure?
What happens to tubercle bacilli within macrophages during the first 3 weeks after exposure?
- They escape from the macrophages
- They are destroyed by the lysosome
- They induce apoptosis in the macrophages
- They replicate within the phagosome by blocking fusion to lysosome (correct)
What type of reaction is developed during the formation of granuloma and caseous necrosis due to tubercle bacilli infection?
What type of reaction is developed during the formation of granuloma and caseous necrosis due to tubercle bacilli infection?
- Type III hypersensitivity reaction
- Type IV hypersensitivity reaction (correct)
- Type I hypersensitivity reaction
- Type II hypersensitivity reaction
What happens about 3 weeks after infection with tubercle bacilli?
What happens about 3 weeks after infection with tubercle bacilli?
- Tubercle bacilli are drained to lymph nodes and presented to T cells (correct)
- Tubercle bacilli migrate to the lungs
- Tubercle bacilli infect the liver
- Tubercle bacilli are eliminated from the body
What is the initial response of most people after being exposed to tubercle bacilli?
What is the initial response of most people after being exposed to tubercle bacilli?
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