Impedimetric immunosensor for electronegative low density lipoprotein ('LDL POT. -') based on monoclonal antibody adsorbed on (polyvinyl formal)-gold nanoparticles matrix - Oliveira, Maria D. L; Abdalla, Dulcinéia Saes Parra; Guilherme, Daniel Ferreira; Faulin, Tanize do Espírito Santo; Andrade, Cesar A. S (Sensors and Actuators B: Chemical, 2011)