Dot blot hybridization of total cell DNAs isolated from 104 Sf-21 or BmN cells at 2, 12, 15, 18, or 24 h p.i. with AcMNPV and virus G (Ac+G), AcMNPV (Ac), virus G (G), viruses A and G (A+G), or virus A (A). The DNAs were fixed to a nylon membrane and hybridized with labeled AcMNPV DNA (NPV probe) or virus G-specific probe (lacZ probe). The standards consist of 0, 5, 20, 100, and 500 ng of AcMNPV DNA.