Deactivating Anthrax Toxin With Nanotubes and Light (image) Rensselaer Polytechnic Institute Share Print E-Mail Caption Transmission electron microscope images show carbon nanotubes conjugated with anthrax toxin before (a, b) and after (c, d) exposure to ultraviolet light. This light caused the adsorbed toxin to deactivate and fall off the nanotube, which is why the structures in pictures c and d are smaller in diameter than those in pictures a and b. Credit Rensselaer/Ravi Kane Usage Restrictions Please include credit line Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.