Principals
Dr. Robert Ryan, D.A.B.T.
President, N.T.C.
501 Vista Del Lago Lane
Wake
Forest, NC 27587
Toll Free: 800-250-7780
Local: 919-570-9630
email: rryan@nationaltoxicology.com
Dr. Claude Terry, D.A.B.T.
President, CTA Environmental (affiliate of N.T.C.)
50 Executive Park South, Suite 5010
Atlanta, GA 30329
Phone: 404-728-9217
Fax: 404-728-9103
Email: cterry@nationaltoxicology.com