WHEN most people think about the immune system, they think of protection against the common cold, influenza or more serious diseases such as Covid-19. Rarely do we stop to consider that our immune system is also quietly engaged in another life-saving battle: protecting us from cancer.
Imagine for a moment that your body is a bustling city. In every city, law and order depend on a vigilant police force with officers patrolling the streets, identifying threats, responding to emergencies and keeping the public safe. Our immune system works in much the same way.
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