National Biomedical ESR Center 
Website: http://www.biophysics.mcw.edu 
E-mail: cfelix@post.its.mcw.edu 

Biotechnology Resource in Pulsed EPR Spectroscopy
Website: http://spin.aecom.yu.edu 
E-mail: peisach@aecom.yu.edu 

EPR Center for the Study of Viable Biological Systems 
E-mail: harold.swartz@dartmouth.edu 

Illinois EPR Research Center (IERC) 
Website: http://ierc.scs.uiuc.edu 
E-mail: ierc@uiuc.edu or rlbeford@uiuc.edu

N.I.E.H.S EPR groups
(Free Radical Metabolite and Photochemistry/ Photobiology sections)
Website: http://epr.niehs.nih.gov
E-mail: www@epr.niehs.nih.gov