Scanning electron micrographs of the PI5–8 stem transverse sections of three-month-old tobacco transgenic lines.

<p>a. and c were from wildtype tobacco plants. b. and d are the L15 <i>PsnSusy2</i> tobacco transgenic line. Short red lines in Figure c and d depict the difference between the cell wall thickness in the tobacco transgenic lines and the wildtype plants. The magnification factor is 100X for Fig. 7a and 7b, and 3000X for 7c and 7d.