"Lethal Dose 50" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus,
MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure,
which enables searching at various levels of specificity.
The dose amount of poisonous or toxic substance or dose of ionizing radiation required to kill 50% of the tested population.
Below are MeSH descriptors whose meaning is more general than "Lethal Dose 50".
Below are MeSH descriptors whose meaning is more specific than "Lethal Dose 50".
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