title: HBs-Ag detection by micro-enzyme linked immunosorbent assay (ELISA) technique.
mesh_terms: D002353:Carrier State / Q000175:diagnosis; D004797:Enzyme-Linked Immunosorbent Assay; D006509:Hepatitis B / Q000175:diagnosis; D006514:Hepatitis B Surface Antigens / Q000032:analysis*; D006801:Humans
chemical_list: D006514:Hepatitis B Surface Antigens