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Read the following statements and select the correct option.
Statement 1: when the immune system fails to recognise 'self' from 'nonself' and starts destroying the body's own proteins, this leads to auto-immune diseases.
Statement 2: Addison's disease and rheumatoid arthritis are auto-immune diseases.
Option: 1
Both statements 1 and 2 are correct
Option: 2
Statement 1 is correct but statement 2 is incorrect
Option: 3
Statement 1 is incorrect but statement 2 is correct
Option: 4
Both statements 1 and 2 are incorrect.
Answers (1)
As we have learnt,
Auto Immunity -
Memory-based acquired immunity evolved in higher vertebrates based on the ability to differentiate foreign organisms (eg: pathogens), from self-cells.
- wherein
Two corollaries of this ability:
- higher vertebrates can distinguish foreign molecules as well as foreign organisms
- due to genetic and other unknown reasons, the body attacks self-cells
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