Co-expression sub-networks derived from enriched genes in dark golden module. Nodes of sub-networks consist of enriched genes and their first neighboring genes. The threshold for edges of co-expression network is 0.25 for weighted correlation. The red genes, Eif2ak2 and Adh1, were identified by enrichment analysis showing in Figure 3B. The potentially important lncRNA MRAK052686 and its associated mRNAs are highlighted in cyan color. Rectangles and circles represent lncRNAs and mRNAs, respectively.