Fig. 5. Clonal analysis for determining the origin of the extra cells. (A) Experimental design. (B) Wild-type sheath, expressing anthocyanins. (C) Xcl1 sheath has extra cell layers (asterisk) between the minor veins and the adaxial epidermis. (D) Non-informative sector extends through the epidermis and internal cell layers. (E) Sector with colored epidermis and extra cells and colorless internal cells. (F) Colorless sector extending through epidermis and the extra cell layers. Scale bars B-F, 100 µm.
