Cats that glow in the dark.

[€uroMeinke]

Forget doing this for scientific purposes - how about doing this for purely aesthetic purpose:

At the forefront of this movement is SymbioticA, a bioart laboratory funded by the University of Western Australia. Run by Ionat Zurr and her husband Oron Catts, the couple is continually pushing the boundaries of art; they've grown a replica of an ear with living human skin cells, miniature wings with the flesh of a pig and mouse cells in the shape of a tiny leather jacket.