Figure 2
From: A simple and efficient method for the long-term preservation of plant cell suspension cultures
Proton-decoupled 13C-NMR spectra of perchloric acid extracts of sycamore cells grown at 22°C and 5°C. Cells were harvested 5 d after subculture at 22°C (a) and 20 d after subculture at 5°C (b). Peak assignments are as follows: ref, reference (maleate) used for quantification; s, sucrose; g, glucose; f, fructose; cit, citrate; mal, malate; suc, succinate; Pro, proline.