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(a1) and (b1) HCD, (a2) and (b2) CID, and (a3) and (b3) EThcD spectra for the LVLNCTAR_5_4_0_0_0 (non-sialylated) and LVLNCTAR_5_4_0_2_0 (sialylated) N-glycopeptides identified in the main sample. The italic underlined N letter is the N-glycosylation site. These glycopeptides are composed of N-Acetylglucosamine (GlcNAc, blue), Mannose (Man, green), Galactose (Gal, yellow), and Sialic acid (NeuAc, purple).
