Figure 3. Reverse transcriptase (RT)-PCR detection of Ostrinia nubilalis ommochrome binding protein 2 (obp2) and 1 (obp1) gene transcripts in fat body tissue from 4th and 5th instar larvae, 5th instar wandering larvae, and 1 wk diapausing larvae. RT-PCR of the -actin (b-actin) gene was used as a control for integrity of total RNA samples from each tissue.