The ArJ-mediated enhancement is orientation-independent. In the 5th instar larvae, MH treatments enhance the transcriptional activity of the promoter combination.

• 在家蚕五龄蚕体内不同发育阶段BmHSC70-4/hr3启动子组合的转录活性有所波动，到熟蚕期达到最高，这与BmHSC70-4启动子一致，说明hr3只是增强转录活性，并不改变特性。