title: Estimation of the bacterial content of pertussis vaccines by dry weight and nitrogen determinations of bacterial mass.
mesh_terms: D001886:Bordetella pertussis / Q000032:analysis*; D009584:Nitrogen / Q000032:analysis*; D010567:Pertussis Vaccine / Q000032:analysis / Q000592:standards*; D013535:Suspensions
chemical_list: D010567:Pertussis Vaccine; D013535:Suspensions; D009584:Nitrogen