Figure 4From: Investigation of ovarian cancer associated sialylation changes in N-linked glycopeptides by quantitative proteomicsTandem mass spectrum of doubly charged ions of (a) heavy CD 3 CO- HA D(18O)WTLTPLK peptide and (b) CD 3 CO-DIVEYYNDSD(18O)GSHVLQGR. Peptide as identified by LTL quantitative proteomics in normal and ovarian cancer sera analysis.Back to article page