List Labs provides, for purchase, formaldehyde inactivated native toxins such as botulinum toxoid, tetanus toxoid, diphtheria toxoid, Staphylococcal enterotoxin B toxoid and toxoid made from C. difficile toxin A and toxin B. These toxoids are appropriate for use as antigens in development of antibodies. With all toxoids, care must be taken to determine the appropriate dosage for the desired response. In addition to chemically inactivated toxins, List Labs produces genetically inactivated toxins such as mutant diphtheria toxin, CRM197, and mutant pertussis toxin which may be used like toxoids and are described on the linked Vaccine Carrier Proteins page. Our Citations include information referencing the use of toxoids in research. Our Support Portal provides technical information on our toxoid products. Visit our blog to learn more about what we do.