Illustration of QUIN-immunopositive cell densities. a) Depressed patients had increased QUIN-immunopositive cell densities in the sACC and the aMCC but not in the pACC. b) MDD patients showed the highest QUIN-immunoreactive cell counts in the sACC and the aMCC compared to BD and control cases. No diagnostic subgroup-dependent differences were observed in the pACC. Annotation: The box plots show the median, interquartile range, sample minimum and sample maximum, * P < 0.05, ** P < 0.01.