Biology · Human Health and Diseases
चेचक के पहले सफल टीके का आविष्कार किसने किया था?
- 1एलेक्जेंडर फ्लेमिंग
- 2क्रिस्टियन बर्नार्ड
- 3जेम्स सिम्पसन
- 4एडवर्ड जेनर✓
सही उत्तर देखें
एडवर्ड जेनर
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