Figure 3: Hippocampal FMN2 is essential for extinction learning and cognitive flexibility.B. Fmn2 mRNA levels were determined in the hippocampus of mice injected with either scrambled or Fmn2 siRNA via qPCR (n= 4/group). Fmn2 levels are reduced in mice injected with Fmn2 siRNAi when compared to the scrambled control group (*P < 0.05). Error bars indicate SEM. 