Toxin-NTNHA (VIDEO) Sanford Burnham Prebys This video is under embargo. Please login to access this video. Caption This video shows the interlocked structure of the botulinum neurotoxin and its bodyguard, NTNHA. Credit Sanford-Burnham Medical Research Institute Usage Restrictions None License Licensed content 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.