Fig. 5. Intercellular trafficking of YFP-CPC in the leaf epidermis. Confocal images of bombarded YFP fusion proteins. (A-E) YFP fluorescence (green). (F-J) Chlorophyll fluorescence (red). (K-O) Merged images. Only YFP-CPC shows cell-to-cell movement forming a cluster of fluorescent cells (D,N). TTG1, GL3, GL1 and GL2 fusions are cell autonomous, as fluorescence is restricted to single cells. Guard cells, as in the upper left of B, are often autofluorescent under these conditions. Scale bars: 10 µm.