CSF contains high levels of complement and circulating antibodies,as well as a patrolling group of specialized T lymphocytes,to prevent infection of the brain and spinal cord.

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CSF (Cerebrospinal Fluid) is a clear, colorless body fluid found in the brain and spinal cord. It is characterized by a low protein content, few cells, and the absence of high levels of complement and circulating antibodies. Its primary function is to cushion the brain within the skull and serve as a shock absorber for the central nervous system. While the CSF does contain some immune cells, including lymphocytes, to help in defense, it does not have high levels of complement and circulating antibodies because it is designed to be a protective, rather than an actively immune-responsive, environment to prevent inflammation that could damage the brain and spinal cord.

CSF Contains High Levels of Complement and Circulating Antibodies,as Well