title: Demonstration of HBsAg in conventional paraffin sections by orcein staining in various liver disorders.
mesh_terms: D001707:Biopsy, Needle; D006514:Hepatitis B Surface Antigens / Q000032:analysis*; D006652:Histological Techniques; D006801:Humans; D008107:Liver Diseases / Q000276:immunology*; D010078:Oxazines; D013194:Staining and Labeling / Q000379:methods
chemical_list: D006514:Hepatitis B Surface Antigens; D010078:Oxazines; C002313:PAcein