Pre-Exposure to Environmental Enrichment Protects against Learning and Memory Deficits Caused by Infrasound Exposure

Figure 7

(a) Bcl-2 staining in the hippocampus in the Sham-SE, IE-SE, and IE-EE groups. (b) The number of Bcl-2-positive neurons in the hippocampus in the IE-SE group was significantly lower than that in the Sham-SE or IE-EE group. (c) The Bcl-2 protein level in the hippocampus in the IE-SE group was significantly lower than that in the Sham-SE or IE-EE group. (d) The Bcl2 mRNA level in the hippocampus in the IE-SE group was significantly lower than that in the Sham-SE or IE-EE group. , , . Data represent means ± SEM,  =6.

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