This product was assayed by immunoblot and found to be reactive against Human NFkB p105 at a dilution of 1:1000 followed by reaction with Peroxidase conjugated Affinity Purified anti-Rabbit IgG [H&L] (Goat) code #611-1302. See also anti-Human NFkB p50 (NFKB1), which is suitable for the detection by immunoblot of both human NFkB p50 (NFKB1) and its precursor protein p105.