Clone of bull cloned

A clone of a cloned prized bull thrives today on a Japanese farm, living proof that "serial cloning" can successfully create life beyond mice.

The second generation cloning that created the black bull named Kamitakafuku took place in 2000, but was not announced until yesterday because researchers wanted to ensure the bull matured.

The only other mammals known to have been cloned from a clone are mice.

"We have proven that recloning can be done in higher species," said University of Connecticut researcher Xiangzhong Yang, one of three authors of the study. The results appeared in the journal Nature Biotechnology.