LEF1 and infection: In order to better understand the baculovirus transcription scheme of AgMNPV during infection of insect cells lines with different susceptibilities and characterize the expression of selected promoters, recombinant AgMNPVs were constructed containing the ie1, gp64, vp39, lef1, p6.9 and polyhedrin promoters controlling the expression of the firefly luciferase gene (fluc).