Discussion
The hepatitis B vaccine is an example of _______.
Answer: D
Correct answer: Recombinant Vaccine
The hepatitis B vaccine is made by inserting the gene for the virus’s surface antigen into yeast, which then manufactures the protein - so it is a recombinant vaccine, the first to be licensed. It contains only one viral protein and no virus at all, so it cannot cause infection. (It is a subunit vaccine as well; “recombinant” is the more precise description, naming how the subunit is produced.)
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