diphtheria toxoid, tetanus toxoid, pertussis vaccine

diph·the·ri·a tox·oid, tet·a·nus tox·oid, per·tus·sis vac·cine (DTP),

a vaccine available in three forms: diphtheria and tetanus toxoids plus pertussis vaccine (DTP); tetanus and diphtheria toxoids, adult type (Td); and tetanus toxoid (T); used for active immunization against diphtheria, tetanus, and whooping cough. DTP has been replaced by an acellular DTP (aDTP) in the U.S.