19thcentury 2003l-267 2018c-037 20thcentury animalexperimentation animalrights animals animalwelfare australia bioethics biology ee7401 england ethics greatbritain history humanexperimentation humanexperimentationinmedicine laboratory laboratoryanimals lawandlegislation medicine moralandethicalaspects nationalsocietyformedicalresearch periodicals physicians publicopinion qy50s667a1978 research researchdesign socialconditions socialmovements unitedstates w1bu871 women wz40g935e2003