Differentially expressed circRNAs between normotensive and hypertensive rats. The figure represents the number of circRNAs differentially expressed according to the microarray analysis. Based on the location and direction on the genome, circRNAs are subcategorized into exonic, intronic, antisense, sense overlapping, and intergenic. S vs. R up indicates circRNAs were upregulated in Dahl salt-sensitive rats (S) compared with Dahl salt-resistant rats (R). S vs. R down indicates circRNAs were downregulated in S compared with R. SHR vs. WKY up indicates circRNAs were upregulated in spontaneously hypertensive rats (SHR) compared with Wistar Kyoto rats (WKY). SHR vs. WKY down indicates circRNAs were downregulated in SHR compared with WKY.