US scientists investigating the production of human organs in pigs, adding stem cells from individuals and DNA from these animals, in order to respond to the lack of donors worldwide, said Monday BBC. A team of the University of California Davis City (USA) injected human stem cells in pig embryos to develop human-bovine embryos, which called “chimeras”. Those skilled allow these “chimeras” are developed in the nut and 28 days before the end of the gestation period, tissue is removed for analysis. Researchers believe that if allowed to end the pregnancy, piglets, which would have a human body would behave like any other pig and would be prepared to develop organs for transplants. For the development of embryos “chimera”, the scientists resorted to a change in method of genome – known as CRISPR – to take DNA from a bovine embryo that has been fertilized, creating a genetic empty and then allows injecting human stem cells, the BBC said. The team, led by Pablo Ross, believes that human stem cells harness the genetic empty bovine embryo so that the fetus can develop a human pancreas. Ross, a degree in veterinary medicine at the University of La Plata (Argentina), believes that this embryo can develop normally, but the pancreas will be done “almost exclusively of human cells,” which would be “compatible” for transplantation in a patient. The BBC says the study is controversial because human stem cells can migrate to the brain that is developing and that if he was born, the animal could have, in some way, a more human behavior. However, Ross said it is very unlikely and “we believe it is a very low possibility that grow a human brain, but this is something we are investigating.” Professor Walter Low, the neurosurgery department at the University of Minnesota (USA), told the BBC that the pigs are “biological incubator” ideal for the growth of human organs and could be used to create not only the pancreas but also hearts, livers, kidneys, lungs and corneas. Details of the research will be known in the “Panorama” program on the BBC.