WB; IHC, Frozen; IC; Western Blotting (WB) and Immunocytochemistry (ICC). A dilution of 1:1,000 is recommended for WB. Human GAPDH has a predicted length of 335 residues and a MW of 36 kDa. A dilution of 1:100 is recommended for IC. Biosensis recommends optimal dilutions/concentrations should be determined by the end user.