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Total lignin and lignin monomer amounts of RHCWs (0–30 mm) from T. juruana (Tj), L. corymbulosa (Lc), and S. martiana (Sm) identified by thioacidolysis. Data are given in nanomoles per square centimeter. Three samples per species out of pooled root tips from 30 plants were analyzed. Error bars indicate sd among the three samples.
