- World's first cloned calf produced
Scientists in the US have produced the world's first cloned calf, the British creators of Dolly, the cloned sheep, announced on Monday. The healthy 44.1 kg Holstein calf named Mr Jefferson was
Scientists in the US have produced the world's first cloned calf, the British creators of Dolly, the cloned sheep, announced on Monday. The healthy 44.1 kg Holstein calf named Mr Jefferson was