title: An electron microscopic study of the structural polymorphism of hepatitis B antigen.
mesh_terms: D002021:Buffers; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003851:Deoxyribonucleases / Q000494:pharmacology; D010450:Endopeptidases / Q000494:pharmacology; D006511:Hepatitis B Antigens / Q000302:isolation & purification; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008854:Microscopy, Electron; D009994:Osmolar Concentration; D010316:Particle Size; D010710:Phosphates / Q000494:pharmacology; D011487:Protein Conformation; D012367:RNA, Viral / Q000032:analysis; D012260:Ribonucleases / Q000494:pharmacology; D014508:Urea / Q000494:pharmacology
chemical_list: D002021:Buffers; D006511:Hepatitis B Antigens; D010710:Phosphates; D012367:RNA, Viral; D014508:Urea; D003851:Deoxyribonucleases; D012260:Ribonucleases; D010450:Endopeptidases