Questionable Paper: Decreased miR-452 expression in human colorectal cancer and its tumor suppressive function. Genetics and Molecular Research 15 (2): gmr.15027730
Questionable Journal: Genetics and molecular research (Impact factor 0.764)
Original Paper 1：Decreased miR-154 expression and its clinical significance in human colorectal cancer. World J Surg Oncol. 2015
Original Paper 2：MiR-206 functions as a tumor suppressor and directly targets K-Ras in human oral squamous cell carcinoma. Onco Targets Ther. 2014
Original Paper 3: miR-32 functions as a tumor suppressor and directly targets SOX9 in human non-small cell lung cancer. Onco Targets Ther. 2015
When using someone else’s work, you must indicate you have borrowed the idea by giving a citation. Besides, if a source’s exact words have to be copied, quotation marks must be given. However, verbatim copy of large sections of text (including a few sentences, whole paragraph, and several paragraphs) is moderate to most severe type of plagiarism whether or not that work is cited or quotation marks are used, even though the original sources are from author’s own publications.