title: [Epidemiological study of antibody to hepatitis B core antigen].
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D005260:Female; D006510:Hepatitis B Antibodies / Q000032:analysis*; D006512:Hepatitis B Core Antigens / Q000276:immunology*; D006513:Hepatitis B e Antigens / Q000032:analysis; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008875:Middle Aged; D012737:Sex Factors
chemical_list: D006510:Hepatitis B Antibodies; D006512:Hepatitis B Core Antigens; D006513:Hepatitis B e Antigens