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. 2019 Nov 6;13:491. doi: 10.3389/fncel.2019.00491

Table 1.

Number of original research articles found for the keyword combinations used for the literature search in PubMed and Scopus citation databases.

Connexin Pannexin
Astrocyte 875 83
Microglia 150 39
Oligodendrocyte 212 5
Ependymal 28 1
Endothelial + Brain 93 6
Tumor + Brain 212 19