title: Demonstration of hepatitis B e antigen in the core of Dane particles.
mesh_terms: D002499:Centrifugation, Density Gradient; D004591:Electrophoresis, Polyacrylamide Gel; D006511:Hepatitis B Antigens / Q000276:immunology* / Q000302:isolation & purification; D006514:Hepatitis B Surface Antigens / Q000276:immunology*; D006801:Humans; D005779:Immunodiffusion; D011402:Pronase / Q000494:pharmacology
chemical_list: D006511:Hepatitis B Antigens; D006514:Hepatitis B Surface Antigens; D011402:Pronase