As the value of quantities or concentrations, in saying an air below which the animals start to death.LT 50 values are reduced when the concentration of zinc oxide increases.
As the amount or concentration in the air. The lowest starting making experimental animals died value. LT50 has decreased with increasing concentration of zinc oxide.
Positive breast volume or concentration in the air. The lowest that laboratory animals start died value. LT50 decreased when the concentration of zinc oxide increases.