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Human cloning - Wikipedia
Cloning humans? Biological, ethical, and social considerations
Cloning Fact Sheet - National Human Genome Research Institute
Cloning | Definition, Process, & Types | Britannica
Scientific and Medical Aspects of Human Reproductive Cloning.
Human Cloning: Biology, Ethics, and Social Implications
The Biotechnology Revolution: PCR and Cloning Expressed Genes
Cloning - National Human Genome Research Institute
Human cloning: can it be made safe? | Nature Reviews Genetics
How does cloning work? - Live Science