On March 23 the compound aminopterin, used outside the United States as rat poison, was identified as the causative agent in a joint statement by New York State Agriculture Commissioner Patrick Hooker and Dr. Donald Smith, dean of Cornell University's College of Veterinary Medicine.
The compound aminopterin was identified as the causative agent in a joint statement by New York State Agriculture Commissioner Patrick Hooker. This was on March 23. The compound aminopterin was identified as the causative agent in a joint statement by Dr. Donald Smith. This was on March 23. The compound aminopterin was used outside the United States as rat poison. New York State Agriculture Commissioner Patrick Hooker were dean of Cornell University's College of Veterinary Medicine. Dr. Donald Smith were dean of Cornell University's College of Veterinary Medicine.