title: Gamma globulin studied longitudinally between the ages of 4 and 20 years.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007114:Immunization; D008297:Male; D008499:Medical Records; D012141:Respiratory Tract Infections / Q000378:metabolism; D005719:gamma-Globulins
chemical_list: D005719:gamma-Globulins