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Median Lethal Dose

In toxicology, a median lethal dose is the quantity of an agent that will kill, within a specified time period, 50 percent of the individuals in a given population. The median lethal dose of a substance is often cited as a measure of how acutely toxic a substance is and is expressed as the amount of substance per kilogram of bodyweight. For instance, the median lethal dose of dioxin is .02 milligrams per kilogram of bodyweight in rats. How much table sugar is considered a median lethal dose? More… Discuss