The immune system’s way of telling the brain that the body is ill is by way of cytokines.
The immune system serves as the body's defense against or restriction of infection. Without it, the body wouldn't be able to fend off attacks from viruses, parasites, bacteria, and other harmful organisms.
The body's immune system is made up of a huge network of cells, organs, proteins, and tissues.
Small proteins called cytokines play a key role in regulating the development and activity of blood and immune system cells. They signal the immune system to function once they are released.
All blood cells and other cells that support the body's immunological and inflammatory responses are affected by cytokines.
In both a healthy and diseased state, the central nervous system's neurons express and interact with cytokines and their receptors, sending messages to the brain.
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