The dose of an antigen that kills 50% of animals in a test group and is used to estimate the virulence of a pathogen is known as
A) Antigen dose₅₀.
B) Virulence-50.
C) LD₅₀ (lethal dose₅₀).
D) Death rate-50.

Question

Quizplus · Accepted Answer

LD₅₀ (lethal dose₅₀) is the dose of an antigen that is lethal to 50% of animals in a test group and is commonly used as an indicator of virulence. Antigen dose₅₀ and Death rate-50 are not commonly used terms in this context, and Virulence-50 is not a recognized term.

The Dose of an Antigen That Kills 50% of Animals