Immunohistochemistry (Paraffin) analysis of paraffin-embedded rat brain tissue using GDF1 Polyclonal Antibody (Product # PA5-119770). The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 8.0-8.4) for 20 minutes. The tissues were blocked in 5% BSA for 30 minutes at room temperature, washed with ddH2O and PBS, and then probed with the GDF1 antibody at a dilution of 1:500 for 30 minutes at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.