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प्रश्न
Multiple choice questions. Tick (✓) the correct choice:
First vaccine was produced by
- Pasteur
- A. Fleming
- Jenner
- Robert Hooke
उत्तर
Jenner
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क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
Multiple choice questions. Tick (✓) the correct choice:
First vaccine was produced by
Jenner