Fig. 5From: Amine-Aldehyde Chemical Conjugation on a Potassium Hydroxide-Treated Polystyrene ELISA Surface for Nanosensing an HIV-p24 AntigenLimit of detection for the HIV-p24 antigen. The p24 was titrated from 0.5 to 500 nM. Three different approaches were followed, conventional and methods 1 and 2Back to article page