Fig. 4From: Immune-enrichment of insulin in bio-fluids on gold-nanoparticle decorated target plate and in situ detection by MALDI MSMALDI MS spectra of standard insulin (34 nM)/C-peptide (331 nM) mixture solution. a MS Spectrum achieved on BSA modified GNP-ITO without anti-insulin antibody. b MS Spectrum achieved on conventional target plate. c MS Spectrum achieved on anti-insulin antibody-modifed GNP-ITO. 5 Replicates for each data were tested at the same conditionsBack to article page