Using animals in research has always been a subject of debate amongst scientific communities worldwide. The decision to perform certain experiments on live animal subjects is always taken after a series of experiments were already performed, leaving this as a final requirement before live human testing. It should always be performed when it is determined that it will provide a significant advancement in the field and will later result in an improvement to the human, social or environmental

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... being. Historically, animals have been used in scientific experiments since ancient times. Their usage has varied greatly, and so did the moral implications. As medicine advanced through the centuries, using live or dead animals was of crucial importance for physiology or anatomy experiments. In modern society, animal experiments are a right attributed to competent researchers who can ensure humane care and use of the animals in controlled environments, with as little discomfort as possible to the living animal. Mice were used as prime subjects for medical experiments, especially in pharmacokinetics studies and treatment.