Figure 3.

The combined action of miR‐140‐5p and DEX protects neurons of hippocampal CA1 region in the left hemisphere observed by HE staining and Nissl staining. Notes: A, HE staining of pyramid neurons in the hippocampal CA1 region of the left hemisphere (200×) & (400×); B, Nissl staining in the hippocampal CA1 region (400×); three surviving rats were randomly selected from the sham and model groups, respectively, and ten surviving rats were selected from other groups, respectively; the experiment was repeated three times; DEX, dexmedetomidine; NC, negative control; miR‐140‐5p, microRNA‐140‐5p; HE, haematoxylin eosin