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Diagnostic value of serum EV lncRNA CCAT1 in GC. (A) Expression of lncRNA CCAT1 in patients with GC and different Tumor-Node-Metastasis stages. lncRNA CCAT1 was normalized to GAPDH. (B) ROC curve analyzing the diagnostic value of EV lncRNA CCAT1 and CEA. EV, extracellular vesicle; lncRNA, long non-coding RNA; CCAT1, colon cancer-associated transcript 1.
