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Bacterial and viral infections of the brain are rare because the ________ prevents most viruses, proteins, and bacteria from entering the cerebrospinal fluid.

User Rgroli
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Answer:

blood-brain barrier

Step-by-step explanation:

The brain is well protected against microbial invasion by cellular barriers, such as the blood-brain barrier (BBB) and the blood-cerebrospinal fluid barrier (BCSFB). In addition, cells within the central nervous system (CNS) are capable of producing an immune response against invading pathogens.

User Jon Phenow
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