Multiple Choice
Researchers tested RNA vaccines against the West Nile virus in dogs and cats. The study design for this experiment is shown in the figure. What group(s) was(were) the experimental groups?
A) placebo for dogs and cats only
B) low dose of vaccine for cats and dogs only
C) high dose of vaccine for cats and low dose of vaccine for dogs only
D) low dose and high dose of vaccine for cats and low dose of vaccine for dogs only
Correct Answer:

Verified
Correct Answer:
Verified
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