These monkey twins are the first primate clones made by the method that developed Dolly
By Dennis NormileJan. 24, 2018 , 12:00 PM
Chinese scientists have produced two genetically identical long-tailed macaques using the same technique that gave us Dolly the sheep, the world’s first cloned mammal. The feat is a first for nonhuman primates, and despite limitations, it could lead to batches of genetically uniform monkeys for biomedical research.
Previous attempts to clone monkeys through the Dolly method, known as somatic cell nuclear transfer (SCNT), produced viable embryos but they failed to mature into healthy animals. The technique starts with taking the nucleus of a cell from a tissue like skin, and inserting it into an animal egg that has had its own DNA-carrying nucleus removed. That combination is then treated with enzymes that return it to an early embryonic state from which it can differentiate into every cell type in the body, like a just-fertilized egg. The egg is then implanted in a surrogate mother for development.
http://www.sciencemag.org/news/2018/01/these-monkey-twins-are-first-primate-clones-made-method-developed-dolly
