Littermate assays of pertussis vaccine.
D001681:Biological Assay; D006801:Humans; D010567:Pertussis Vaccine; D014611:Vaccination; D014612:Vaccines; D014917:Whooping Cough / Q000276:immunology*
D010567:Pertussis Vaccine; D014612:Vaccines
VACCINES AND VACCINATION; WHOOPING COUGH/immunology