Selective IgA deficiency.
D000936:Antigen-Antibody Complex / Q000032:analysis; D002648:Child; D002675:Child, Preschool; D004406:Dysgammaglobulinemia / Q000150:complications / Q000276:immunology*; D006801:Humans; D017098:IgA Deficiency; D007073:Immunoglobulin E / Q000032:analysis; D007223:Infant; D007958:Leukocyte Count; D012635:Secretory Component / Q000032:analysis
D000936:Antigen-Antibody Complex; D012635:Secretory Component; D007073:Immunoglobulin E