Addison Biological Laboratory, Inc. is a Fayette, MO based manufacturer and marketer of exclusive veterinary technologies. For over a third of a century, J. Bruce Addison, president and founder, has been recognized as a leader in veterinary diagnostics and herd specific bacterin production. The reputable MAXI/GUARD product line is best known for its M. bovis (pinkeye) cattle bacterin among bovine veterinarians