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Plots of neuronal packing density in all layers combined (A) and in individual layers II (B), IIIc (C), and V (D) in cortical area 47 of control and alcohol-dependent subjects. Horizontal lines denote median values. *Significant differences: (A) p < 0.0005, (B) p = 0.011, (C) p < 0.014. (D) NS indicates nonsignificant difference.
