Beef from a second bull bred from a clone has illegally entered the human food chain and has been eaten in the last few months, safety officials have disclosed.
The Food Standards Agency said it had now traced all four cows and four bulls that were bred in Britain from embryos harvested from a cloned cow in the US, as the controversy over the use of cloned animals intensified.
http://www.guardian.co.uk/uk/2010/aug/04/cloned-bulls-meat-cows-beef-fsa