CEBP a in Human Liver. CEBP a was detected in immersion fixed paraffin embedded sections of human liver using Sheep Human CEBP a Affinity purified Polyclonal at 5ug/ml overnight at 4°C. Tissue was stained using the Sheep HRPDAB Cell & Tissue Staining Kit (and counterstained with hematoxylin (blue). Specific staining was localized to nuclei in hepatocytes.