1. Agricultural Research Service www.ars.usda.gov 

2. American Animal Hospital Association www.healthypet.com 

Association for Assessment and Accreditation of Laboratory Animal Care International

(AAALAC International) www.aaalac.org 

4. American Society for the Prevention of Cruelty to Animals www.aspca.org 

5. American Veterinary Medical Association www.avma.org 

6. Animal and Plant Health Inspection Service www.aphis.usda.gov 

7. Association of American Veterinary Medical Colleges www.aavmc.org 

8. Centers for Disease Control and Prevention www.cdc.gov 

9. Environmental Protection Agency www.epa.gov 

10. Food and Drug Administration www.fda.gov 

11. Food Safety and Inspection Service www.fsis.usda.gov 

12. National Animal Health Monitoring System www.aphis.usda.gov/vs/ceah/cahm 

13. National Institutes of Health www.nih.gov 

14. National Research Council www.nas.edu/nrc 

15. National Science Foundation www.nsf.gov 

16. National Veterinary Services Laboratories (Web site not found)

17. North American Veterinary Technician Association www.avma.org/navta/default.htm 

18. Technology Assessment, The Congress www.wws.princeton.edu/~ota/ 

19. Pan American Health Organization www.paho.org 

20. U. S. Public Health Service www.phs.os.dhhs.gov/phs/phs.html