Scheme 1From: Enhanced Stability of Gold Magnetic Nanoparticles with Poly(4-styrenesulfonic acid-co-maleic acid): Tailored Optical Properties for Protein Detection a The schematic illustration of the “over-all” process of surface modification of gold magnetic particles (GoldMag) and the molecular structure of poly(4-styrenesulfonic acid-co-maleic acid) (PSS-MA). b Schematic representation of the interaction of D-dimer with antibody 1 and 2-PSS-MA-GoldMag, as well as the interaction between D-dimer and antibody 1-PSS-MA-GoldMagBack to article page