Fig. 1From: Dysregulated long noncoding RNAs (lncRNAs) in hepatocellular carcinoma: implications for tumorigenesis, disease progression, and liver cancer stem cellsMultiple origins of lncRNAs. lncRNA may derive from (1) insertion of a transposable element; (2) duplication in non-coding RNA; (3) a previous protein coding gene; (4) chromatin rearrangement [36,37,38]Back to article page