Fig. 1.

microRNAs expressed in plasma and tissue. This figure illustrates the number of miRNAs differentially expressed in tissue and in plasma in AF patients. Note the high number of upregulated miRNAs in tissue, whereas miRNAs in plasma more often have lower levels in AF. Furthermore, there is little overlap between tissue and plasma expression of the miRNAs that have lower or higher levels in AF (between the dotted lines). There is a substantial proportion of miRNAs that present contradicting results (miRNAs described to be both up- and downregulated in tissue or plasma)