Lethal Dose - LD50/30.

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  • There is variation among species and within species in dose required to cause death.
  • Due to this variability among members of the same species, we express survival (or lethality) as an average:
LD50/30.

  • This is the dose required to be administered acutely (within 1 hour) that will cause the death of 50% of the exposed organisms within 30 days if no medical treatment is provided.


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