Based on what we discussed in lecture this week, which of the following is the biggest challenge for finding effective treatments for the majority of central nervous system disorders? Cerebral spinal fluid (CSF) is flushed so regularly that nothing has time to bind to receptors The blood brain barrier prevents almost all large molecule and the majority of small molecule drugs from entering targeted brain regions Transporters reuptake drugs too quickly for them to have any effect on their target receptors Microglia are constantly attacking invading microorganisms
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