Figure 3.

Autoradiograms visualizing carbon transport within an Arabidopsis rosette. Pictures (A, C, E) and autoradiograms (B, D, F) of Col-0 rosettes labelled with ¹⁴CO₂. Leaf 4 (A and B), 6 (C and D) and 8 (E and F) were labelled for 5 min followed by a chase period of 1 h. A close-up of leaf 12 is shown in B. The leaves are numbered as described in Figure 2. Plant material was dried and exposed to the film for 10 days.