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J -is no ordinary rat. In fact, thanks to the modification of a single gene, he's probably ..................... intelligent rat in the world.

The rodent, named after a Chinese cartoon character,.................. as an embryo with genrtic material.

As a result, Hobbie -J can remember objects for three times as long as his contemporaries, and is far.......................... than other rats at negotiating mazes.

Since the technique................... previously to work on mice, the researchers are optimistic that it could be successfully applied to a wide variety of other species - possibly ....................... humans.

If the scientists started their researches earlier, they ........................

great success in this.