Our use of animals Find out how we use animals in our research including information on which animals we use, how we care for them and our efforts to find alternatives to animal testing. Discover more.. Animal welfare Find out how GlaxoSmithKline ensure animal welfare in its laboratories. The 3Rs in medicine research Replace, reduce and refine: how we apply the 3Rs to our animal research. Use of non-human primates Find out more about the use of non-human primates in medical research. Frequently asked questions FAQs about the use of animals in medical research.