Fig. 1

Characteristics of poly(A) sites. The reads and poly(A) sites were first mapped to the known sites of UCSC and Tiaqn’s poly(A) database, and the unmapped reads were annotated to 3′UTR, intron, CDS, 1 kb-downstream and intergenic region. a Pie-chart of mapping location of reads. b Volcano plot for DEGs. c KEGG enrichment analysis for up-regulated genes in cancer tissues. d KEGG enrichment analysis for down-regulated genes in cancer tissues