Fig. 4From: No symphony without bassoon and piccolo: changes in synaptic active zone proteins in Huntington’s diseaseImmunohistochemistry of Bassoon in HD patient superior frontal gyrus. a DAB-stained sections from a control (upper) and a grade 4 patient (lower) brain (Scale bar = 200 μm). b Measurement of DAB-staining intensity. The signal in the gray matter of the cortex was measured (arbitrary units) and plotted against disease grades. Spearman correlation, tied p = 0.02Back to article page