Which 3Rs principle would be applied by replacing animals with non-animal alternatives?

Which 3Rs principle would be applied by replacing animals with non-animal alternatives?

• A. Refinement
• B. Replacement
• C. Reduction
• D. Resolution

Answer: (B)

Replacement is about using non-animal methods instead of animals whenever possible. The three Rs guide humane laboratory practice: Replacement, Refinement, and Reduction. Replacing animals with alternatives like in vitro cell cultures, computer modeling, organ-on-a-chip systems, or human data directly aligns with Replacement, because the animal is substituted with non-animal methods. Refinement focuses on minimizing pain and distress in animals used, and Reduction aims to use fewer animals overall. So replacing animals with non-animal alternatives is Replacement.

Replacement is about using non-animal methods instead of animals whenever possible. The three Rs guide humane laboratory practice: Replacement, Refinement, and Reduction. Replacing animals with alternatives like in vitro cell cultures, computer modeling, organ-on-a-chip systems, or human data directly aligns with Replacement, because the animal is substituted with non-animal methods. Refinement focuses on minimizing pain and distress in animals used, and Reduction aims to use fewer animals overall. So replacing animals with non-animal alternatives is Replacement.