Immunolocalization of xylan in transverse stem sections using the LM10 antibody reveals changes in abundance. Transverse stem sections of basal stem material from wild type (wt; A), irx10 irx10-L (B), irx9-L (C), irx9 (D), irx9 irx9-L/+ (E), irx9 irx9-L (F), irx14-L (G), irx14 (H), irx14 irx14-L/+ (I), irx14 irx14-L (J), f8h (K), fra8 (L), fra8 f8h/+ (M), and fra8 f8h (N). Xylem (xy) and the interfascicular region (if) are indicated. Scale bar, 50 μm.