Fig. 2.

MS²spectra of sulfated core 1 disaccharides at m/z 464 ([M-H]⁻ions)purified from cyst fluids from OC patients with benign (“BEN”) and malignant (“MAL”) tumors. Components are labeled as 464-1 (A) and 464-2 (B). The extracted ion chromatograms from the full scans are inserted. For key to symbols, see Figure 1. ∗ The ions at m/z 302 in panel A correspond to a fragment ion consisting of sulfate linked to the core reducing sugar GalNAcol and may originate from minor amounts of a coeluting glycoform.