The concentration of virus that infects or kills 50% of the host cells is referred to as the

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Quizplus · Accepted Answer

The concentration of virus that infects or kills 50% of the host cells is known as the median tissue culture infective dose (TCID50) or median lethal dose (LD50) depending on whether the virus is being tested for its infectivity or lethality. However, the term ID50 is also commonly used as a general term for the concentration of virus required to infect 50% of the host cells. Therefore, the best choice is E as LD50 and ID50 are both used to describe the concentration of virus that infects or kills 50% of the host cells. LD100 and ID100 would refer to the concentration of virus required to infect or kill 100% of the host cells, which is not relevant to this question.

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