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. 2019 May 2;17:100085. doi: 10.1016/j.bdq.2019.100085

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© 2019 The Authors

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

Fig. 1 — Circular RNA as emerging novel biomarkers. The rapid development of circRNA research and circRNA in combination with biomarkers can be inferred from the percentage of PubMed-cited publications (https://www.ncbi.nlm.nih.gov/pubmed) using circular RNA (blue graphs) and circular RNA + biomarker (red graphs) as keywords in searches, of publications using the general terms RNA and RNA + biomarker as keywords, for publications between 2008 and 2018. The number inside the bars represents the absolute number of publications.