title: Biologicals unit and expanded programme on immunization. WHO European region workshop on testing of DPT vaccine with emphasis on in vitro methods.
mesh_terms: D000818:Animals; D015721:Diphtheria-Tetanus-Pertussis Vaccine; D006801:Humans; D066298:In Vitro Techniques; D014944:World Health Organization
chemical_list: D015721:Diphtheria-Tetanus-Pertussis Vaccine