Anti-IDN3 Antibody - Western Blot. Western blot of Affinity Purified anti-IDN3 antibody shows detection of bands at ~315 kD and ~125 kD corresponding to isoforms of IDN3 (arrow-heads) in mouse heart whole cell tissue extract. Approximately 35 ug of lysate was separated on a 4-8% gel by SDS-PAGE and transferred onto nitrocellulose. After blocking the membrane was probed with the primary antibody diluted to 1:1500. Reaction occurred overnight at 4? followed by washes and reaction with a 1:20000 dilution of IRDye800 conjugated Rb-a-Goat IgG [H&L] MXHu ( for 45 min at room temperature. IRDye800 fluorescence image was captured using the Odyssey Infrared Imaging System developed by LI-COR. IRDye is a trademark of LI-COR, Inc. Other detection systems will yield similar results.