Fig. 2From: Heterologous immunoassay strategy for enhancing detection sensitivity of banned dye rhodamine B in fraudulent foodConjugation schematic diagram and UV–Vis spectrum. a Schematic diagram of RB–BSA/OVA conjugation; b Schematic diagram of RBITC–BSA/OVA conjugation; c UV–Vis spectrum for RB, BSA, OVA, RB–BSA, and RB–OVA; d UV–Vis spectrum for RBITC, BSA, OVA, RBITC–BSA, and RBITC-OVABack to article page