Which statement is true for \(\mathrm{LD_{50}}\)?
Question and options
Which statement is true for ?
- Dose that kills 50 people only
- Dose that doesn’t kill 50 people
- Dose that shows its effect on 50 people
- Dose that kills 50% of a test group
Answer and explanation
Correct answer: D - Dose that kills 50% of a test group
(median lethal dose) is the dose that kills 50% of a tested population, usually of laboratory animals. The subscript is a percentage, not a count, so the options speaking of 50 people misread it.
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