Complex sentence: It is highly debated if the Choroid plexus can be included in this classification because of its high concentration of fenestrated capillaries, but its lack of neural tissue and main role of producing Cerebrospinal fluid (CSF) usually excludes the Choroid Plexus from the CVO classification.
Split into simpler sentences: It is highly debated if the Choroid plexus can be included as a CVO. It has a high concentration of fenestrated capillaries, but its lack of neural tissue and its primary role of producing Cerebrospinal fluid (CSF) usually excludes the Choroid Plexus from the CVO classification.