Fig. 1. Spatiotemporal expression pattern of nvd-Bm. (A) Northern blot analysis showing temporal expression profiles of nvd-Bm. The length of the nvd-Bm cDNA (3747 bp) is similar to the 3.7 kb band detected by northern hybridization. No other bands were detected (data not shown). (B) Tissue expression profiles of nvd-Bm and a control gene rpL3 in the W1 fifth instar larvae by reverse transcription-PCR.