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प्रश्न
Differentiate between Active acquired immunity and passive acquired immunity.
अंतर स्पष्ट करें
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उत्तर
| Aspect | Active Acquired Immunity | Passive Acquired Immunity |
| Source | Host produces own antibodies & memory cells | Antibodies received directly from another source |
| How acquired | Natural infection or vaccination | Maternal transfer or injection of immune serum |
| Time to develop | Slow, takes time to develop | Immediate |
| Duration of protection | Long-lasting, sometimes lifelong | Short-lived, temporary |
| Memory cells | Yes, immune memory formed | No memory cells formed |
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