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. 2020 Nov 13;21(22):8558. doi: 10.3390/ijms21228558

Figure 1.

Figure 1

Conjugation strategies for producing Group A Streptococcus (GAS) conjugates: selective direct reductive amination between the aldehyde group at the reducing residue of GAC and lysines of the carrier protein (green approach) [12] and reductive amination between the aldehyde groups randomly generated through oxidization of GAC and lysines of the carrier protein (orange approach).