Western blot shows lysates of NRK rat normal kidney cell line, U2OS human osteosarcoma cell line, and Balb/3T3 mouse embryonic fibroblast cell line. PVDF membrane was probed with 0.2 µg/mL of Mouse Anti-Human/Mouse/Rat p27/Kip1 Monoclonal Antibody (Catalog # MAB2256) followed by HRP-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # HAF007). A specific band was detected for p27/Kip1 at approximately 30 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.