Figure 2. Detection of the A and B gene transcripts in the transformed tomato leaf tissues by primer extension. Lane 1 and 3 represent the reactions from plant 1 and 3 carrying pPCV701-AB. Primer P14 was used for the detection of the A gene transcripts; primer P21 was used for the detection of the B gene transcripts. Lane C was the reaction from a non-transformed plant. All the reactions contained 5 µg of total RNA isolated from the plant leaf tissues.