Fig. 1
From: The association of plasma cystatin C proteoforms with diabetic chronic kidney disease
MALDI-MSIA-mass spectra showing all CysC proteoforms. Signals for native CysC along with several cystatin C proteoforms: CysC containing hydroxyproline at position 3 (CysC 3Pro-OH), CysC missing its N-terminal Serine (CysC des-S), and CysC missing its three N-terminal residues (CysC des-SSP) are detected. BL is beta lactoglobulin used as an internal reference standard for quantification