Genetic engineers in Shanghai say they have created monkeys that carry a rare human gene related to autism, which could help them identify brain malfunctions that cause serious behavioral problems. As WSJ's Robert Lee Hotz reports:

The scientists at the Chinese Academy of Science’s Institute of Neuroscience, who announced their feat Monday in Nature, are using the transgenic monkeys to probe the biology of social isolation and repetitive behavior, which are hallmarks of autism spectrum disorders. “We think this transgenic monkey offers a unique model to study human autism disorders,” said lead researcher Zilong Qui...