Western blot shows lysates of HeLa human cervical epithelial carcinoma cell line and Jurkat human acute T cell leukemia cell line untreated (-) or treated (+) with 10 nm Recombinant Human IGF‑I (Catalog # 291-G1) for 1 hour. PVDF Membrane was probed with 1 µg/mL of Rabbit Anti-Human Phospho-PGC1 alpha (S571) Antigen Affinity-purified Polyclonal Antibody (Catalog # AF6650) followed by HRP-conjugated Anti-Rabbit IgG Secondary Antibody (Catalog # HAF008). A specific band was detected for Phospho-PGC1 alpha (S571) at approximately 120 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.