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CBSE Class 12-science Answered

hepattis b vaccine is  a. first generation vaccine  b. second generation vaccine  c. third genertion vaccine  d. none of these
Asked by kaintkaku | 01 May, 2018, 08:24: AM
answered-by-expert Expert Answer

Until now, three generations of HBV vaccines has been introduced.

  • HBV first vaccine generation contained inactivated HBsAg driven from the human carrier plasma of the HBV infected individuals.
  • Recombinant DNA technology let to making second generation of HBV vaccines by using the yeast Saccharomyces cerevisiae with these two formulas; Engerix B and Recombivax HB. These types of vaccination also contain HBsAg.
  • Third generation vaccines are considerably more immunogenic, than HBsAg due to their uses of pre-S1 and pre-S2 antigens, but they aren’t used widespread yet. Third generation vaccines are also manufactured with recombinant DNA technology by mammalian cells

 
Answered by Sheetal Kolte | 01 May, 2018, 08:51: AM
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