Western blot shows lysates of SW480 human colorectal adenocarcinoma cell line, COLO 205 human colorectal adenocarcinoma cell line, HepG2 human hepatocellular carcinoma cell line, A549 human lung carcinoma cell line, and human heart tissue. PVDF membrane was probed with 1 µg/mL of Sheep Anti-Human Prostaglandin E Synthase 2/PTGES2 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF7627) followed by HRP-conjugated Anti-Sheep IgG Secondary Antibody (Catalog # HAF016). A specific band was detected for Prostaglandin E Synthase 2/PTGES2 at approximately 30-32 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.