Figure 4.

¹H HR-MACS NMR study of cell growths. (A) Spectral comparison composed of averaged spectra (with n = 5): green corresponds to cell growth at 24-h; red at 48-h; and blue at 72-h. The ΔS spectrum is the spectral difference between 72 and 24-h cells. The positive peaks correspond to the increased in metabolite contents in 72-h cells, and the negative peaks in the 24-h cells. Both the assignments and abbreviations are listed in Table S1. (B) OPLS-DA loading with Q² = 0.986, R²Y(cum) = 0.986 and R²X(cum) = 0.857.