Reverse transcription analysis of the yts1D and yts2D genes at 27 and at 37°C. Lanes: 1, marker; 2, ail at 37°C; 4, inv at 27°C; 6, yts1D at 27°C; 8, yts1D at 37°C; 10, yts2D at 27°C; 12, yts2D at 37°C. Lanes 3, 5, 7, 9, 11, and 13, the corresponding negative controls (without reverse transcription).