Fig. 9From: Shoot tip culture: a step towards 13C metabolite flux analysis of sink leaf metabolismAverage label enrichment (%) into different protein-bound amino acids in leaves of 15 DALV. a Cultured with U-13C glucose b Cultured with 12C glucose (control) at 5 μmol m−2 s−1 light intensity (mean ± standard error, n = 5)Back to article page