Fig. 7
From: A 13C isotope labeling method for the measurement of lignin metabolic flux in Arabidopsis stems
PAL and 4CL activities in the base of wild-type stems over the feeding course. Activities of PAL and 4CL were measured from the basal 0–2 cm of 4-week-old Arabidopsis stems fed with 1 mM Phe. Data represent mean ± SD (n = 3). One-way ANOVA was tested for PAL and 4CL assays respectively and statistical difference by Tukey HSD test (p < 0.01) was indicated by different letters