Figure 3
KO of GCGR in zebrafish increased glucagon expression in ?-cells.A and B, the plots show the expression of glucagon genes (A) and their regulators (B). The color scale ranges gray to blue corresponding to expression level from low to high; all plots are based on cell clusters shown in Fig. 1B. C, the violin plots show gcga and gcgb relative expression in ?-cells from control and gcgr?/? zebrafish. D, heatmap of differentially expressed genes (DEGs) of gcgr?/? compared to control cells; the color scale ranges red to blue corresponding to expression level from low to high. E, pathway enrichment analysis of DEGs between gcgr?/? and control cells. GCGR, glucagon receptor.