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. Author manuscript; available in PMC: 2014 Aug 21.
Published in final edited form as: Bioconjug Chem. 2013 Aug 21;24(8):1277–1294. doi: 10.1021/bc400102w

Figure 2.

Figure 2

(A) Synthesis of sialosides containing sialic acid modifications via a chemoenzymatic approach. (B) Application of sialyltransferase for cell surface labeling using sialic acid derivatives. Rx (X=5–9) represent groups that can contain an azide, an alkyne or other bioorthogonal functional groups.