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. 2020 Dec 14;11:581699. doi: 10.3389/fphys.2020.581699

FIGURE 4.

FIGURE 4

Volcano plots of serum metabolites. (A) Shows the D7 group compared to the D0 group. (B) Shows the D25 group compared to the D7 group. (C) Shows the D25 group compared to the D0 group. The red dots represent metabolites that are up-regulated, the blue dots represent metabolites that are down-regulated, and the gray dots represent metabolites that do not change significantly. The dot sizes indicate the variable importance in the projection (VIP) value. D0, overfeeding for 0 day; D7, overfeeding for 7 days; D25, overfeeding for 25 days.