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In addition to the physical protection provided by the skull, the brain is protected by a special biological barrier, including the BBB, blood-cerebrospinal fluid barrier (BCSFB), and cerebrospinal fluid-brain barrier (CSF-brain barrier) (Figure 1), among which the BBB has the lowest permeability
The force has already committed to the war that turns on all three answers
Most available research covers short-term use up to several months, with no major safety signals identified
Ongoing research and analytical verification are crucial to further understanding its role in peptide therapy and its potential applications in addressing various medical conditions
