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New York State Stem Cell Science

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What is the difference between reproductive and therapeutic cloning?

Reproductive cloning involves creating an animal that is genetically identical to a donor animal through somatic cell nuclear transfer. In reproductive cloning, the newly created embryo is placed back into the uterine environment where it can implant and develop. Dolly the sheep is perhaps the most well known example. In therapeutic cloning, an embryo is created in a similar way, but the resulting "cloned" cells remain in a dish in the lab; they are not implanted into a female's uterus. [NOTE: ESSC Board statute specifically prohibits support for research that directly or indirectly involves human reproductive cloning.]