title: Letter: Frequency of hepatitis-B antigen or antibody in household contacts of HBAg carriers.
mesh_terms: D000328:Adult; D002353:Carrier State / Q000276:immunology*; D002648:Child; D003075:Coitus; D005260:Female; D006386:Hemagglutination Tests; D006509:Hepatitis B / Q000235:genetics / Q000276:immunology / Q000635:transmission*; D006510:Hepatitis B Antibodies / Q000302:isolation & purification; D006511:Hepatitis B Antigens / Q000302:isolation & purification*; D006801:Humans; D005779:Immunodiffusion; D008297:Male; D012112:Residential Facilities
chemical_list: D006510:Hepatitis B Antibodies; D006511:Hepatitis B Antigens