A recent study has shown that a species of fish has the ability to image its own immune system. The study, conducted by researchers at the University of California, Davis, has demonstrated the ability of the zebrafish to detect and respond to changes in its environment, including immune-related ones. The researchers observed that when the fish detected an immune-related change, it would adjust its behavior accordingly. This study is the first of its kind to show that a species of fish can image its own immune system, and it marks an important milestone in our understanding of how animals interact with their environment.

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source: Phys.org