[STUDIES ON RESULTS OF THE SCHICK TEST IN CHILDREN AND CHANGES IN THE  DIPHTHERIA ANTITOXIN LEVEL IN THE BLOOD WITH AGE].
D000375:Aging; D001774:Blood Chemical Analysis; D002648:Child; D004166:Diphtheria Antitoxin; D004167:Diphtheria Toxin; D006801:Humans; D007223:Infant; D012882:Skin Tests
D004166:Diphtheria Antitoxin; D004167:Diphtheria Toxin
AGING; BLOOD CHEMICAL ANALYSIS; CHILD; DIPHTHERIA ANTITOXIN; DIPHTHERIA TOXIN; INFANT; SKIN TESTS