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. Author manuscript; available in PMC: 2010 Feb 19.
Published in final edited form as: Annu Rev Neurosci. 2007;30:235–258. doi: 10.1146/annurev.neuro.30.051606.094345

Figure 2.

Figure 2

Perineurial glial cells and the BBB. Immunolocalization of Nrx IV in the larval ventral nerve cord and brain lobes of the CNS shows that the protein is expressed in midline glia (arrows) as well as at the edges of the perineurial glial cells required for the maintenance of the BBB in third instar larvae. These are very large cells that ensheath the entire CNS. Note the giant cells surrounding the brain lobes and also the nerve cord (asterisks). Anterior is up.