Rhino poaching is primarily motivated by the demand for their horns in countries such as China and Vietnam. Specifically, the researchers analyzed the rhino’s blood for micronuclei in their white blood cells—a known sign of cellular damage. The printed horns had similar properties to keratin, the same material that real rhino horns are made of. [ Related: Rhino horns are shrinking, and humans are to blame. ] “Our goal is to deploy the Rhisotope technology at scale to help protect one of Africa’s most iconic and threatened species,” said Jessica Babich, Rhisotope Project CEO.