The long-term toxicology of an experimental drug in animals most likely refers to preclinical research in drug development.
Drug development refers to the steps and procedure which are employed in developing and approving new drugs for use in treatment of diseases.
The steps in drug development include:
Preclinical research involves studies of the drug using animal models.
Therefore, the long-term toxicology of an experimental drug in animals most likely refers to preclinical research in drug development.
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