An experimental technology that might someday allow infertile couples, as well as gay and trans couples, to have genetically related children stirs hope. So far, the technique has worked in mice.

Scientists in Japan are leaders in the development of IVG, new technology that could make sperm and eggs from practically any cell in the body. The results could transform human reproduction.

New companies are working to commercialize in vitro gametogenesis, or IVG, a technology that could make human eggs and sperm in the lab from any cell in the body.