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Effect of miR‐18a on the Mtb‐infected RAW264.7 macrophages. A, The viability of RAW264.7 cells was detected by CCK‐8. B, The ultrastructure changes of RAW264.7 macrophages were detected by TEM. The number of autophagosomes per cross‐sectioned cell was counted (20 cells per group counted by TEM). Data represent the means ± SD from three independent experiments. *P < .05, **P < .01, ***P < .001, # P < .05, ## P < .01, ### P < .001
