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Stels [109]
2 years ago
10

Thirty patients with acne volunteer to be treated with either a medicinal lotion

Biology
1 answer:
Marina CMI [18]2 years ago
3 0

Answer:

Thirty patients with acne volunteer to be treated with either a medicinal lotion

or a normal moisturizing cream. This type of experimental design is called

a clinical trial.-B.

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