Assertion: human cloning | /r/CapableOf | remain until ayala
Facets:
value: technically
type: MANNER
Source sentences:
text: Although scientists first cloned vertebrates, namely frogs, more than half a century ago, and more than 20 years have passed from the successful cloning of Dolly, human cloning has remained both technically and ethically impossible until now (Ayala 8884).