Tooth Tattoo Will Tell You Why You're Sick...

Usually, your tooth will ache to...  ...ways, we all will be sportin' a special sensor made of graphene tattooed to our teeth to tell...  ...ine and his group have shown that the sensors can detect bacteria individually, pic...

http://www.neatorama.com/2012/03/29/tooth-tattoo-will-tell-you-why-youre-sick/