The invisible war being waged inside your body every single day

How does your immune system work? - Emma Bryce · 5:23 · Video: TED-Ed · Watch at the source

In short: Your body is constantly defending itself against billions of bacteria, viruses, and toxins. This video explores how your immune system coordinates a vast network of cells and organs to prevent minor injuries from becoming fatal.

Emma Bryce takes you inside the body to examine the frontline of your biological defenses. The video details how a complex network of tissues, organs, and cells works together to identify and neutralize health threats. Without this coordinated response, even a seasonal cold or a simple paper cut could prove deadly.

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