21.   When the measure reaches the House floor, opponents are expected to argue that it should be limited to a simple ban on cloning humans.

22.   When asked about cloning humans, he hoped that no one would try.

23.   While the research suggests that cloning humans might some day be possible, many genetic experts have said it would be unethical to try.

24.   Wilmut told the senators that talk of cloning humans was premature because the technique was too inefficient.

25.   And it set off a worldwide debate about the ethics of cloning humans.

26.   And it adds to the ethical and medical concerns about the consequences of cloning humans.

27.   But the scientists also call for an outright ban on cloning humans for reproductive purposes.

28.   But the scientists will also call for an outright ban on cloning humans for reproductive purposes, newspapers said.

29.   Commission officials said a ban already exists on cloning humans, but until now the EU has not attempted to regulate other forms of genetic manipulation.

30.   He is on the verge of cloning humans.