title: Comparison of sensitivity of radioimmunoassay and immune electron microscopy for detecting hepatitis A antigen in fecal extracts.
mesh_terms: D000956:Antigens, Viral / Q000032:analysis*; D005243:Feces / Q000276:immunology*; D006506:Hepatitis A / Q000276:immunology*; D006801:Humans; D008854:Microscopy, Electron; D011863:Radioimmunoassay
chemical_list: D000956:Antigens, Viral