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A. CRH levels in BN rats after 1 and 3 day PM2.5 exposure. There were significant changes in CRH levels only after PM2.5 exposure for 1 day. ‘a’ indicates significant difference from acute-air exposed group; p<0.05. No differences were observed in CRH levels after repeated exposures. B. CRH levels in the ME of JCR/LA rats. There were no treatment effects on CRH levels in these rats.
