Fig. 1From: N-glycosylation patterns of plasma proteins and immunoglobulin G in chronic obstructive pulmonary diseasea HILIC-UPLC profile of the total N-linked glycans released from plasma glycoproteins. Only the most abundant glycoform is presented for each glycan peak. b HILIC-UPLC profile of the total N-linked glycans released from immunoglobulin G. GP: glycan peak; RT: retention timeBack to article page