TD50 represents which of the following?

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Multiple Choice

TD50 represents which of the following?

Explanation:
TD50 is the dose at which a defined toxic effect occurs in 50% of the population. It is used to gauge safety alongside ED50 (effective dose) and LD50 (lethal dose). The option describing a dose that produces a defined toxic effect in half the people matches this concept exactly. The other ideas refer to different endpoints or thresholds: a 90% toxic effect would be a different percentile, LD50 is about death, and a vague “adverse effects” endpoint isn’t tied to a specific toxicity threshold.

TD50 is the dose at which a defined toxic effect occurs in 50% of the population. It is used to gauge safety alongside ED50 (effective dose) and LD50 (lethal dose). The option describing a dose that produces a defined toxic effect in half the people matches this concept exactly. The other ideas refer to different endpoints or thresholds: a 90% toxic effect would be a different percentile, LD50 is about death, and a vague “adverse effects” endpoint isn’t tied to a specific toxicity threshold.

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