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Effects of exposure to low and high doses (2 and 10 mg/kg) of PM2.5 on anxiety‐ and depressive‐like behaviors in immature and mature rats. (a) Bar graphs showing the percentage of entries into open arms during the elevated plus maze (EPM) test; (b) percentage of time spent in open arms in the EPM test; (c) latency to immobility in the forced swimming (FS) test; (d) time spent immobile during the forced swimming test. *p < .05 compared with saline group. n = 10 per group
