Figure 8. Summary of glutamate receptor and transporter gene expression in DB3 cells

For AMPA-sensitive subunits, of the 26 confirmed DB3 cells, each expressed the GluR4 gene, followed by GluR2 (22/26), and GluR1 (15/26). The only expressed kainate subunit gene was GluR6 (18/26). Nearly every DB3 cell also expressed the EAA2 transporter gene (25/26), but no others. Since no cell expressed an mGluR subunit, these are not represented in the graph.