Fig. 2From: Enhanced sensitivity of VEGF detection using catalase-mediated chemiluminescence immunoassay based on CdTe QD/H2O2 systemParameter optimization of the proposed CL-ELISA. a CAT–VEGF conjugate concentration. b The enzyme reaction time between CAT and H2O2. The error bars represent the standard deviation of three parallel measurements. Kinetic curves were fitted according to the one-phase decay exponential model of GraphPad Prism version 6 (half-life is 20 s)Back to article page