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. 2017 Apr 21;7:46484. doi: 10.1038/srep46484

Figure 7. Hypothetical scheme for the lengthy cyclic evolutionary process of the biosynthetic pathway for microbial polysaccharides.

Figure 7

There are many possible forms (ag) of the evolutionary process (I–III). “A~G” stands for different genes related to polysaccharide biosynthesis.