Figure 5: Hierarchical cluster analysis of differentially expressed long noncoding RNAs (lncRNAs) (A) and mRNAs (B). The expression levels of transcripts were determined using fragments per kilobase of exon per million fragments (FPKM) values of differentially expressed transcripts in each sample from four groups, and hierarchical cluster analysis of lncRNAs and mRNAs was conducted. The log10 values (FPKM + 1) for lncRNA and mRNA transcripts were used for clustering, with red indicating highly expressed transcripts and blue indicating transcripts with low expression. The log10 values (FPKM + 1) of lncRNA transcripts are indicated in a range from red to blue. The sham, IR, RIP, and ISP groups contained six samples each. IR: Ischemia/reperfusion; ISP: in situ ischemic postconditioning; RIP: remote ischemic postconditioning.