Contrary to the earlier belief that the brain and immune system operate independently of each other, scientists accidentally discovered a link working with rats in a(n)

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In a classical conditioning paradigm experiment with rats, scientists accidentally discovered that the brain and immune system were connected. They found that the immune system responded to a stimulus that had previously been paired with an immune-suppressing drug, indicating a connection between the two systems. This experiment helped overturn the earlier belief that the brain and immune system were completely independent of each other.

Contrary to the Earlier Belief That the Brain and Immune