Fig. 2: Collision-induced dissociation (CID) MS/MS spectra of features A and C isolated from HPII plasma samples.
From: Identification of Δ-1-pyrroline-5-carboxylate derived biomarkers for hyperprolinemia type II

a CID MS/MS spectra of feature A (m/z 172.0964). b CID MS/MS spectra of feature C (m/z 174.0765).