Immunohistochemistry analysis of Properdin in paraffin-embedded human cholangiocarcinoma tissue. Antigen retrieval was performed on the tissue using citrate buffer (pH 6, 20 min) and blocked with 10% goat serum. Samples were incubated with Properdin polyclonal antibody (Product # PA5-95544) at a 1 µg/mL dilution, followed by biotinylated goat anti-rabbit IgG (30 min, 37°C), and developed with Strepavidin-Biotin-Complex and DAB.

Western blot analysis of Properdin in Lane 1: human placenta tissue lysates, Lane 2: human U-937 whole cell lysate, Lane 3: rat brain tissue lysates, Lane 4: mouse brain tissue lysates. Electrophoresis was performed with 5-20% SDS-PAGE gel (70V, Stacking gel; 90V Resolving gel, Time: 2-3 hours), transferred to a nitrocellulose membrane and blocked using 5% Non-fat Milk/TBS (1.5 hrs at room temperature). Samples were incubated with Properdin polyclonal antibody (Product # PA5-95544) using a 0.5 µg/mL dilution, followed by a goat anti-rabbit IgG-HRP at a dilution of 1:10,000, and developed with enhanced chemiluminescence (ECL).