Fig. 2From: A principal components method constrained by elementary flux modes: analysis of flux data setsPlot of the active EMs-normalized (on the upper left the identified EMs (PEMs), on the upper right the unidentified EMs) and the first five PCA loadings, as well as the basis rotated loadings (lower plots). The corresponding reactions are shown on the right, where => signifies irreversible reactions, whereas <=> reversible reactionsBack to article page