Using animals for organ donors have been tried for years, but cross species transplants have done very poorly over time. Now the use of CRISPER can tolerate organ donation much like Dolly the Sheep. Genetic material are used in pig cells in the early embryo and implanted in sows. The plan is to create pigs that have also been altered to make them more immunologically similar to people. In theory, this should mean transplanted organs are less prone to attack by a recipient’s immune system. This work is being done by Robin Weiss of University College London as reported in the New Scientist August 19, 2017 issue.