These chemicals secreted by the immune system signal the nervous system:

Question

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Cytokines are chemical messengers that are secreted by the immune system and help to coordinate the body's response to infections and injuries. They can also signal the nervous system to initiate a response. Leukocytes and phagocytes are types of immune cells that help to fight infections, but they do not directly signal the nervous system. Antigens are foreign substances that trigger an immune response but do not directly signal the nervous system.

These Chemicals Secreted by the Immune System Signal the Nervous