Information about animal experiments

​​Experiments performed on laboratory animals in biomedical research give us knowledge that can be applied to human and animal disease prevention, treatment or cure.

  • Laboratory animals are bred for the purpose and the vast majority is rodents, mainly mice.
  • Wild, farm or pet animals may be used in the study only if there is scientific justification that the animal species concerned is the only animal species suitable for a project carried out for an essential biomedical purpose or when looking for improvements for the living conditions of the species.
  • Animals are used in the studies where it is required by authorities that, before a new medicine or chemicals are approved for market, it must be tested further. These studies provide information on new substances and on how to protect the safety of people, animals and their environment from  adverse impacts.

In biological studies, measurements and observations are made on different levels: from the molecular and cellular level to the living organism and its environment.

  • in vitro studies - performed with cells or biological molecules studied outside their normal biological context which show ongoing processes on the cellular level
  • in vivo studies –performed on living organisms, usually animals but including also humans and plants

The complexity of the biological phenomena, their impact on heredity and environmental interactions must be known and understood in all levels, which is why in vivo studies must be conducted in order to obtain the necessary information, e.g. the impact of administered drug on the animal’s bodily functions.

At the end of the study, the animal is usually euthanised and its organs, tissues and cells provide more information about the test drug’s impact on molecules.