title: Hepatitis B surface antigen in cerebrospinal fluid.
mesh_terms: D002648:Child; D005260:Female; D006510:Hepatitis B Antibodies / Q000032:analysis; D006514:Hepatitis B Surface Antigens / Q000134:cerebrospinal fluid*; D006525:Hepatitis, Viral, Human / Q000097:blood / Q000134:cerebrospinal fluid; D006801:Humans; D009549:Nigeria
chemical_list: D006510:Hepatitis B Antibodies; D006514:Hepatitis B Surface Antigens