title: Electon microscopy in the rapid screening of sera for the presence of H.A.A. (hepatitis associated antigen).
mesh_terms: D000818:Animals; D006511:Hepatitis B Antigens / Q000032:analysis*; D006801:Humans; D007158:Immunologic Techniques; D008854:Microscopy, Electron; D011817:Rabbits; D013997:Time Factors; D014461:Ultracentrifugation
chemical_list: D006511:Hepatitis B Antigens