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Comparison of the age‐ and gender‐matched pairs. Expression levels of 40 selected miRNAs in three age‐ and gender‐matched pairs of healthy and periodontitis subjects. H2 vs. P3 (sample set #1), H4 vs. P1 (sample set #1), and H9 vs. P5 (sample set #2). Note that up‐ and down‐regulation patterns are mostly common among three comparison pairs.
