The effect of heat, buffer salt and H-ion concentration, and ultraviolet light on the infectivity of heliothis and trichoplusia nuclear-polyhedrosis viruses.
D006358:Hot Temperature; D006863:Hydrogen-Ion Concentration; D007304:Insect Viruses / Q000472:pathogenicity*; D012492:Salts; D014466:Ultraviolet Rays
D012492:Salts