Fig 2: GDNF immunohistochemical expression in cingulum. Cingulum immunohistochemistry results: basal immunohistochemistry reaction of GDNF in the control case, see arrows (A) 10x magnification (B) 40x magnification; over-expression of GDNF in a sample of suicide case, see arrows (C) 10x magnification (D) 40x magnification. The graphical representation of the statistical analysis is in the lower part of the figures.

Fig 3: GDNF immunohistochemical expression in the prefrontal cortex. Prefrontal cortex immunohistochemistry results: basal immunohistochemistry reaction of GDNF in thecontrol case (the control case used is the same as Figure 1, you can see in consecutive slice section the difference of reaction between the two markers), see arrows (A) 10x magnification (B) 40x magnification; over-expression of GDNF in a sample of suicide case, see arrows (C) 10x magnification (D) 40x magnification. The graphical representation of the statistical analysis is in the lower part of the figures.

Fig 4: GDNF immunohistochemical expression in basal nuclei. Basal nuclei immunohistochemistry results: basal immunohistochemistry reaction of GDNF in the control case, see arrows (A) 10x magnification (B) 40x magnification; similar basal expression of GDNF in a sample of suicide case, see arrows (C) 10x magnification (D) 40x magnification. In the lower part of the figures is the graphical representation of the statistical analysis.

Fig 5: GDNF immunohistochemical expression in cingulum. Cingulum immunohistochemistry results: basal immunohistochemistry reaction of GDNF in the control case, see arrows (A) 10x magnification (B) 40x magnification; over-expression of GDNF in a sample of suicide case, see arrows (C) 10x magnification (D) 40x magnification. The graphical representation of the statistical analysis is in the lower part of the figures.