Delivery: Kit includes lyophilised recombinant human cathepsin B standard, 2×10 ng/tube, one 96-well plate precoated with anti-human cathepsin B antibody, sample diluent buffer, 30 ml; biotinylated anti-human cathepsin B antibody, 130 µl; antibody diluent buffer, 130 µl; avidin-biotin-peroxidase complex (ABC), 12 ml; ABC diluent buffer, 12 ml; TMB colour developing agent, 10 ml; and TMB stop solution, 10 ml.