Genetically engineered vaccines are considered safer than older vaccines because they
Correct answer: C. contain only specific proteins of the pathogen, not the whole organism
- A. contain live pathogens
- B. are never tested before use
- C. contain only specific proteins of the pathogen, not the whole organism
- D. provide immunity without any immune response
Explanation
Recombinant vaccines such as hepatitis B present one safe protein to the immune system, removing any risk of the disease itself. An immune response is still required; that is how the memory is made.
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About Biotechnology and Health Care
Biotechnology applies genetic engineering, cell culture and recombinant DNA methods to medicine and public health. The material includes production of insulin, vaccines and antibiotics, diagnostic techniques, gene therapy, genetically modified organisms and the ethical concerns surrounding manipulation of human genes.
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