Protoxin-II -- Voltage-Gated Sodium Channel Structure (IMAGE) University of California - Davis Health Caption This is an extracellular view of Protoxin-II -- voltage-gated sodium channel structure with Protoxin-II depicted in orange and the voltage-gated sodium channel in blue. Credit UC Davis Health Usage Restrictions Use with appropriate caption and credit with this release only 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.