South Korean scientists said that after altering genes and cloning the cats, they made the cats that glow red when exposed to ultraviolet rays.

The experiment may be counted as one of the big steps towards using the genetic technology for the modification of human genes to cure diseases, according to the Science and Technology Ministry.

The cats that glow in dark are part of an experimental research at Gyeongsang National University and Sunchon National University, where scientists used skin cells to replicate them into several kitty clones around 12 months ago.

During the experiment and cloning process, the scientists injected the fluorescent gene into them before transplanting the genetically modified cells into eggs, the Associated Press reported.

"The ability to manipulate the fluorescent protein and use this to clone cats opens new horizons for artificially creating animals with human illnesses linked to genetic causes," the Ministry of Science and Technology said in Wednesday's report, according to MSNBC.

Since the manipulation was possible with an insertion of a fluorescent gene during cloning, the same technology could be tried in humans as well to develop new treatments.

"Cats have similar genes to those of humans," veterinary professor Kong Il-keun of Gyeongsang National University, told AP. "We can make genetically modified cats that can be used to develop new cures for genetic diseases."

The scientists showed off the three Turkish Angora cats this week weighing 7 pounds each. The cloning experiment on cats started in 2001 and the current experiment resulted after the scientists worked for over four years.