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immune system

How our body recognises “foreigners”

Millions watched proudly as the armed forces of our nation displayed their mighty prowess for the world to see during the Republic Day parade. We regard those who protect our nation from foreign attacks with high esteem. Oddly enough, not many of us have stopped to marvel at the intricate mechanisms by which our human body has contrived a defense system no less admirable than the armed forces of our nation. A system that continues to protect us in spite of all that we throw at it.