Behold... FluorescoCat!

South Koreans clone cats - with added fluorescence proteins.

South Korean scientists have cloned cats by manipulating a fluorescent protein gene, a procedure which could help develop treatments for human genetic diseases, officials said Wednesday.

In a side-effect, the cloned cats glow in the dark when exposed to ultraviolet beams.

I do like that 'exposed to ultraviolet beams' - it has such a ring of a Marvel Comics origin story...