Formaldehyde as an inactivant.
Brown
F
F
D002626:Chemistry, Pharmaceutical; D004168:Diphtheria Toxoid / Q000737:chemistry*; D005557:Formaldehyde / Q000737:chemistry*; D015164:Vaccines, Inactivated / Q000737:chemistry*
D004168:Diphtheria Toxoid; D015164:Vaccines, Inactivated; D005557:Formaldehyde