title: A study of immunoglobulin levels among Singapore infants and children.
mesh_terms: D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D002681:China; D005260:Female; D006801:Humans; D005779:Immunodiffusion; D007070:Immunoglobulin A / Q000032:analysis; D007074:Immunoglobulin G / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis; D007136:Immunoglobulins / Q000032:analysis*; D007194:India; D007223:Infant; D007231:Infant, Newborn; D007564:Japan; D008296:Malaysia; D008297:Male; D044469:Racial Groups; D012737:Sex Factors; D012846:Singapore; D014481:United States
chemical_list: D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D007136:Immunoglobulins