Figure 2
From: N-glycans of the microalga Chlorella vulgaris are of the oligomannosidic type but highly methylated

Constituent analysis of a Chlorella vulgaris 211-11b sample by GLC-MS. The bottom panels show the spectra for di- and mono-methylated hexose peaks, which were identified as 3,6-O-methyl mannose and 3-O-methyl mannose by their retention time.