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movingmanders t1_iw4wec8 wrote

Some things cannot be predicted in models, so these animals are often used in the preclinical trials to learn more about the potential side effects in humans. Drug developers want to make sure the drug is safe first, then they'll look into whether or not it works. If a drug makes an animal piss blood or develop seizures it probably won't make it to human trials regardless of if it works.

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