Figure 1. Western blot analysis of SOX3 using anti-SOX3 antibody (A02255-1). Electrophoresis was performed on a 5-20% SDS-PAGE gel at 70V (Stacking gel) / 90V (Resolving gel) for 2-3 hours. The sample well of each lane was loaded with 50ug of sample under reducing conditions. Lane 1: rat brain tissue lysates, . Lane 2: rat heart tissue lysates, . Lane 3: mouse brain tissue lysates, . Lane 4: mouse heart tissue lysates. After Electrophoresis, proteins were transferred to a Nitrocellulose membrane at 150mA for 50-90 minutes. Blocked the membrane with 5% Non-fat Milk/ TBS for 1.5 hour at RT. The membrane was incubated with rabbit anti-SOX3 antigen affinity purified polyclonal antibody (Catalog # A02255-1) at 0.5 ?g/mL overnight at 4?C, then washed with TBS-0.1%Tween 3 times with 5 minutes each and probed with a goat anti-rabbit IgG-HRP secondary antibody at a dilution of 1:10000 for 1.5 hour at RT. The signal is developed using an Enhanced Chemiluminescent detection (ECL) kit (Catalog # EK1002) with Tanon 5200 system. A specific band was detected for SOX3 at approximately 45KD. The expected band size for SOX3 is at 45KD.