Selecting Species for Pharmaceutical and Medical Research

Obtaining an approval either for a drug for a therapeutic use [1-4] or for biomedical equipment requires in the majority of cases laboratory experiments on cells and animals to describe the divers related details including the potential toxic effects, the side effects and the optimized conditions of use or administrations. Within this letter we aim to further illustrate how to select the species of animal to conduct the required tests on or to extract the cells, organs or molecules from those species that we need for in vitro tests and based on what a species is either included or excluded. Indeed, in some case such choice can be a struggle facing the development of the files since it depends on divers factors including the type of the conducted research, the investigated organ or system and the duration of the experiment. Therefore, clarifying the related concepts remains a priority for pharmaceutical and medical research.