is_manufactured_by immunizes recipient immunizes against pathogen avian paramyxovirus 1 Gallus gallus plant-based Newcastle disease virus vaccine Oliver He vaccine HN recombinant produced in plant cell lines (registered but not on market) The plant-based Newcastle disease virus vaccine is a Newcastle disease virus vaccine that is developed by Dow AgroSciences LLC. It uses technology discovered at Washington University. It is the first plant-made animal vaccine approved for sale in the United States. Newcastle disease virus vaccine Dow AgroSciences