Figure 4From: Development and evaluation of an immuno-MALDI (iMALDI) assay for angiotensin I and the diagnosis of secondary hypertensionThe determination of PRA by iMALDI. A) A standard curve is created from antibody captures of natural and SIS peptides. B) MALDI spectra showing capture of natural and SIS Ang-I in a 4°C sample. C) MALDI spectra showing capture of natural and SIS Ang-I in a 37°C sample.Back to article page