Figure 2: QCM measurements for the detection of TNT. Antibody displacement from TNB by TNT and TNT analogs. Anti-TNT antibody (10µg/mL) was immobilized on the crystal surface and three compounds (10µg/mL, TNT: red line; TNB: green line; DNT: blue line) were tested. The arrows represent the time points when TNT and its analogs were added. Results are representative of three independent experiments.