Figure 3From: Development of antibody functionalized magnetic nanoparticles for the immunoassay of carcinoembryonic antigen: a feasibility study for clinical use Stability tests for the bio-activity of anti-CEA functionalized magnetic nanoparticles dispersed in PBS solution, stored at 25°C using immunomagnetic reduction. The p values for the IMR signals with respect to the initial IMR signals are plotted.Back to article page