| 摘要 |
Hepatitis B surface antigen particles composed of single polypeptide subunits having a molecular weight of about 55,000 dalton are prepared by heating hepatitis B surface antigen in isotonic sodium chloride solution at about neutral pH containing a surfactant capable of delipidation such as alkali-metal salts of bile acids or of lauroylsarcosinic acid, or poloxyethylene alkylphenol containing an average oxyethylene of 7 to 10 molecules, or polyoxyethylene sorbitan monoalkylester containing an average oxyethylene of 20 molecules.
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