Fig. 3From: Co-aggregation of pro-inflammatory S100A9 with α-synuclein in Parkinson’s disease: ex vivo and in vitro studiesImmunohistochemical analysis of the brain tissues of four control cases. Representative immunostaining with α-syn (a, b) and S100A9 (c, d) antibodies of the substantia nigra (a, c) and frontal lobe (b, d) tissues, respectively. Neuromelanin is shown in brown color and immunostaining with corresponding antibody in reddish color. Scale bars are 100 μmBack to article page