Abstract:MicroRNAs are a new group of regulatory RNAs that are about 22 nucleotides long. MicroRNAs are also involved in many human cancers and can actually act as oncogenes and suppressors. In this study, the relationship between miR-21 levels in the serum of sick and healthy individuals and the relationship between high concentrations of this microRNA and tumor staging and cancer progression was performed for the first time in Iran on gastric cardia cancer. This study was performed on 40 patients with gastric cardia … Show more
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