Apolipoprotein CI/Apo-CI expression in Human Liver analyzed by immunohistochemistry. Tissue was paraffin-embedded, and antigen retrieval was achieved by steaming in citrate buffer, pH 6. Staining was performed with Anti-Apolipoprotein CI/Apo-CI Antibody (A84340) at 3.8µg/ml and revealed with alkaline phosphatase (AP).