The immune system is an interconnected network of elements extended throughout your body. These include organs, tissues, cells and molecules, all acting in concert to create a symphony. Its effectiveness does not depend on the performance of one of its components, but of the system as a whole.
In the immune concert, each one of its components has a role, and cytokines are undoubtedly the conductors of the orchestra. They are signaling molecules whose main task is to activate, recruit or stop the actions of immune cells.
In the natural immune response, large amounts of cytokines are not required. They are such active molecules that even in small amounts they are capable of directing and leading the reaction.
Each cytokine is a word in the immune message, and their presence or absence influences the final melody.