1. USDA, Agricultural Research Service, National Center for Agricultural Utilization Research, Renewable Product Technology Research, 1815 N. University St., Peoria, Illinois 61604, United States
2. USDA, Agricultural Research Service, National Animal Disease Center, 1920 Dayton Ave., Ames, Iowa 50010, United States
3. Cayman Chemical, 1180 E. Ellsworth Rd., Ann Arbor, Michigan 48108, United States