(A) MCP-1 and (B) IL-6 mRNA expression in 12 h MEHP or control treated Fisher Rats (667 mg/kg p.o., light grey), C57BL/6J (800 mg/kg p.o., black) and A/J mice (800 mg/kg p.o., dark grey) (n=3 per treatment per species/strain). Only Fisher rats showed increased cytokine mRNA expression as a result of MEHP treatment. Statistical analysis was performed using two-way ANOVA for unmatched data with Sidak’s multiple comparison test and significance is indicated for each MEHP-treated animal compared to its control. * p < 0.05, ** p < 0.01.