Very interesting (prurience aside). I wonder (total speculation here, not based in science or any knowledge whatsoever) if ovaries might be similarly useful as a stem cell source?
Stem cell research may go a long way to solving some previously insoluble health problems, and it would be great to be able to do it with something as widely available as balls.
'I'd give my left nut to cure this cancer' may take on a more literal meaning, which could only be a good thing.