Fig. 2
From: The transcriptome of the olm provides insights into its evolution and gene expression

Gene expression in the olm across organs examined. (a) Clustering of samples based on the most highly expressed genes (transcript per million value of > 100, n = 723). “p4”, “p5” and “p6” denote different olm individuals examined. (b) Principal component analysis using the same data as in a. (c) Number of organ-specific genes, i.e. differentially expressed in comparison to all other respective samples (FDR < 0.05, Fold-Change > 2). (d) Summary of gene set enrichment analysis of organ-specific genes. Displayed are the five terms per organ with the lowest p-value respectively. Four terms belong to the top-5 of multiple organs resulting in the 26 terms displayed.