Emma Bryce: How does the immune system work?

How does the immune system work?

Inside you, a daily battle is being waged and your immune system is at the frontline. Most of the time, you may not even notice it's there, but over the course of your life your immune system will guard you against hundreds of potentially fatal threats. Emma Bryce explores the different components of this system and how, together, they do their vital work. [Directed by Felipe Grosso & Odirlei Seixas, narrated by Addison Anderson, music by Vadeco Schettini].

The immune system operates as a vigilant defense network, protecting against billions of bacteria, viruses, and toxins that could otherwise turn minor illnesses deadly. Each drop of blood contains thousands of white blood cells constantly patrolling for danger, ready to launch a rapid, coordinated response. These cells not only fight infections but also build long-term immunity, often erasing threats before they cause harm. Without this invisible cavalry, even a papercut or mosquito bite could prove fatal.