Figure 1From: Multifunctional Nanocarriers for diagnostics, drug delivery and targeted treatment across blood-brain barrier: perspectives on tracking and neuroimagingOverview of the two main barriers in the CNS. blood-brain barrier and blood cerebrospinal fluid barrier (BCSF). ISF: Interstitial Fluid. CSF: Cerebrospinal fluid. Adapted from [17, 18].Back to article page