title: Hepatitis--B antigen in Nigerian children.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D006506:Hepatitis A / Q000453:epidemiology / Q000473:pathology; D006509:Hepatitis B / Q000453:epidemiology / Q000473:pathology; D006511:Hepatitis B Antigens / Q000302:isolation & purification*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008099:Liver / Q000473:pathology; D009549:Nigeria; D014329:Tropical Climate
chemical_list: D006511:Hepatitis B Antigens