The concentration of virus that infects or kills 50% of the host cells is referred to as the
A) LD₅₀
B) ID₅₀
C) ID₁₀₀
D) LD₁₀₀ AND ID₁₀₀
E) LD₅₀ AND ID₅₀

Question

Quizplus · Accepted Answer

LD₅₀ (Lethal Dose 50%) refers to the concentration of a substance that kills 50% of a test population, while ID₅₀ (Infectious Dose 50%) refers to the concentration of a virus that infects 50% of the host cells. Both terms are relevant in the context of measuring the potency of a virus or toxin, but ID₅₀ is more specific to the context of infection.

The Concentration of Virus That Infects or Kills 50% of the Host