Hepatitis b vaccine

Details Hepatitis b vaccine Hepatitis b vaccine

A - Human Necessities

61

K

167/130

A61K 39/12 (2006.01) C07K 14/02 (2006.01) A61K 39/00 (2006.01)

Patent

CA 1066191

ABSTRACT OF THE DISCLOSURE Hepatitis B antigen useful as vaccine is prepared from clarified plasma of hepatitis B donors by treating with pepsin at a pH wherein pepsin is enzyma- tically active, treating with urea, and optionally treating with formaldehyde.

251740

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