The first GM food crop containing human genes is set to be approved for commercial production.
The laboratory-created rice produces some of the human proteins found in breast milk and saliva.
Its U.S. developers say they could be used to treat children with diarrhoea, a major killer in the Third World.
The rice is a major step in so-called Frankenstein Foods, the first mingling of human-origin genes and those from plants. But the U.S. Department of Agriculture has already signalled it plans to allow commercial cultivation.