SSAT Reading Question 267: Answer and Explanation
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Question: 267
3. According to the passage, which of the following are components used in vaccine development?
I. inactivated toxins
II. weakened microbes
III. purified proteins
- A. I only
- B. II only
- C. III only
- D. I and II only
Correct Answer: E
Explanation:
E is correct. As stated in the last paragraph, "Weakened microbes, killed microbes, inactivated toxins, and purified proteins or polysaccharides derived from microbes are the most common components used in vaccine development strategies."