Comparison of Three Species of Rhubarb in Inhibiting Vascular Endothelial Injury via Regulation of PI3K/AKT/NF-κB Signaling Pathway

Figure 1

PCA and OPLS-DA diagram of three species of rhubarb: PCA in positive ion mode (a), PCA in negative ion mode (b), OPLS-DA in positive ion mode (c), and OPLS-DA in negative ion mode (d).

(a)

(b)

(c)

(d)