女生小视频

A clone of a cloned bull has been born in Japan, the first large mammal
created this way. The clone was made from a skin cell of a bull calf, itself the
clone of a 16-year-old bull. Researchers at the Kagoshima Prefectural Cattle
Breeding Development Institute say the succession of clones will help them
understand clone genetics and life cycles. Ultimately the Japanese hope to clone
herds of cattle commercially.