It is poor science to use inappropriate strains of rodents in badly designed and inefficient experiments for testing the safety of chemicals. It is also costly and unethical because greater numbers of laboratory animals are needed.
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Festing, M. Fat rats and carcinogenesis screening. Nature 388, 321–322 (1997). https://doi.org/10.1038/40964
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DOI: https://doi.org/10.1038/40964
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