After performing research on cells isolated from chickens that have the genetic trait of muscular dystrophy, a researcher performs a study on 300 young people with muscular dystrophy. He is evaluating the effect of a particular drug on the condition. Which is the correct statement?
A. This is an example of an in vitro study.
B. This is an example of an in vivo study.
C. This is an example of a case study.
D. This is an example of secondary research.
Answer: B
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