title: Response of preterm infants to DTP immunization.
mesh_terms: D004168:Diphtheria Toxoid; D015721:Diphtheria-Tetanus-Pertussis Vaccine; D004338:Drug Combinations; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D010567:Pertussis Vaccine; D013223:Statistics as Topic; D013745:Tetanus Toxoid
chemical_list: D004168:Diphtheria Toxoid; D015721:Diphtheria-Tetanus-Pertussis Vaccine; D004338:Drug Combinations; D010567:Pertussis Vaccine; D013745:Tetanus Toxoid