Chinese scientists clone mad cow-resistant calf

The birth of the 55-kg (121-lb) calf in the eastern province of Shandong comes three years after a team led by now-disgraced South Korean scientist Hwang Woo-suk cloned cows with a protein structure resistant to bovine spongiform encephalopathy ( BSE ).

"Scientists with the Laiyang Agro-Science Institute in Shandong said they used gene-transplant technology to introduce the genes to the calf cloned from cells of an adult cow," Xinhua said.

The research was led by professors Dong Yajuan and Bo Xuejin -- who succeeded in cloning China�s first and second healthy cows in 2001 -- in collaboration with a Japanese university.

State television reported that further tests would be required on the calf as it grows to verify the effectiveness of the transplanted genes.