title: beta-Ecdysone effects on the development of nucleopolyhedrosis in Heliothis spp.
mesh_terms: D000818:Animals; D004440:Ecdysone / Q000494:pharmacology*; D007304:Insect Viruses / Q000187:drug effects*; D007313:Insecta / Q000382:microbiology*
chemical_list: D004440:Ecdysone