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Option 3 : White blood cells
White blood cells provide immunity to our body. They help in fighting against diseases, infections, allergies and foreign particles. These cells keep our body safe and healthy. White blood cell is called as "soldiers of the human body”.
| Content in Blood | Function |
| White blood cells | Provides immunity to our body |
| Red blood cells | Carrier of oxygen and carbon dioxide(removal) |
| Basophils | Fight against parasitic infection |
| Platelets | Clotting of blood |
| Eosinophils | Fight against allergic reaction |
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