| royalsociety.org | Royal Society - Science Issues: Animals in Research |
| animalliberation.net | The Justice Department |
| wabr.org | Washington Association for Biomedical Research |
| iivs.org | Institute for In Vitro Sciences (IIVS) |
| iclas.org | International Council for Laboratory Animal Science |
| fbresearch.org | Foundation for Biomedical Research |
| ethologicalethics.org | Ethologists for the Ethical Treatment of Animals |
| nas.edu | Institute for Laboratory Animal Research (ILAR) |
| jhsph.edu | Altweb - Alternatives to Animal Testing: Refinement, Reduction, Replacement |
| simr.org.uk | Seriously Ill For Medical Research |
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