"The interesting bit is that semiconductor quantum dots, which emit light, were made in a living animal," "The aim of the work, it was just to see if we could do solid-state chemistry in a living animal — and it appears we can!"

"they can be "tuned" to glow at specific wavelengths"

http://www.livescience.com/25826-worms-make-metal-semiconductors.html



Also see semiconductor:
http://en.wikipedia.org/wiki/Semiconductor


This could be what causes those days when everything you touch shocks you! And when sometimes you seem to affect electronic devices... The heavier the parasite load, the more "shocking" we get? How shocking!