title: Letter: Hepatitis A virus-like particles.
mesh_terms: D005243:Feces / Q000382:microbiology; D006505:Hepatitis / Q000276:immunology / Q000382:microbiology*; D006511:Hepatitis B Antigens / Q000032:analysis; D006518:Hepatitis Viruses / Q000302:isolation & purification*; D006801:Humans; D007136:Immunoglobulins / Q000032:analysis; D011863:Radioimmunoassay
chemical_list: D006511:Hepatitis B Antigens; D007136:Immunoglobulins