In the study, scientists removed small sections of skin from mice.

Dr. Smith then heard about new results from experimental mice.

But she did not know when tests might move from mice to people.

Paper was often kept in a can or other container to protect it from mice, etc.

The production notes say that 799 animals were involved, from dogs and mice to, of course, pigs.

Many of them are made from mice, or other lower creatures.

"Going from mice to people is a big jump, with lots of failures," he said.

More than 150 animals from mice to pythons live at the center and participate in programs for the public.

But to take therapeutic cloning from mice to people will not be simple.

There are notes on the animals mentioned, which range in size from mice to moose.