The use of animals in experimental research has soared at leading US laboratories in recent years, finds research published online in the Journal of Medical Ethics.
This is despite growing public opposition to animal experimentation, mounting evidence that animal studies often do not faithfully translate to people, and the development of new research technologies that supplant animal use.
The data contradict industry claims of reduced animal use and are at odds with government policies designed to curb and replace the use of animals in experiments, say the researchers.