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Fig. 2 | Journal of Experimental & Clinical Cancer Research

Fig. 2

From: Long noncoding RNA: a dazzling dancer in tumor immune microenvironment

Fig. 2

The proportion of ncRNAs in transcriptome and their classification. Protein-coding mRNAs only account for a small proportion in transcriptome, while the majority of them are non-coding RNAs (ncRNAs). Among them, ncRNAs can be divided into two main categories according to the molecular structure, linear RNA and circular RNA. The linear RNAs are further classified as small ncRNAs and long ncRNAs (lncRNAs) according to whether the length exceeds 200 nt. Short ncRNAs consist of microRNAs (miRNAs), small nucleolar RNAs, PIWI-interacting RNAs, endogenous small interfering RNAs. LncRNAs are composed of six types according to genomic location; sense, antisense, bidirectional, intronic, intergenic (lincRNAs) and enhancer

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