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miR‐503‐5p functioned as a tumor suppressor in GC. (a) SGC‐7901 cells were transfected with miR‐503‐5p mimic, and MGC‐803 cells were transfected with miR‐503‐5p inhibitors, and the transfection efficiency was validated by qRT‐PCR. (b–f) miR‐503‐5p overexpression inhibited proliferation, migration, invasion, and EMT of SGC‐7901 cells, while inhibition of miR‐503‐5p promoted proliferation, migration, invasion, and EMT of MGC‐803 cells process. *p < .05, **p < .01, ***p < .001
