AGO2 and lung cancer: Most importantly, in comparison of all normal tissues and lung cancers, the expression of miR-19b was positively correlated with the expression of AGO2-K493-Ac (spearman’s rho = 0.5897, P < 0.0001) and AGO2-K720-Ac (spearman’s rho = 0.4553, P < 0.0001), respectively (Fig. 7e).