title: [An investigation on toxoplasmosis in the Beijing District].
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002648:Child; D002681:China; D005260:Female; D006801:Humans; D007074:Immunoglobulin G / Q000032:analysis; D007231:Infant, Newborn; D008297:Male; D008875:Middle Aged; D012737:Sex Factors; D014123:Toxoplasmosis / Q000453:epidemiology*
chemical_list: D007074:Immunoglobulin G