Sulfide Binding by the Blood of the Hydrothermal Vent Tube Worm Riftia pachyptila

Abstract
The blood of the deep-sea hydrothermal vent tube worm Riftia pachyptila Jones contains a sulfide-binding protein that appears to concentrate sulfide from the environment and may function for sulfide transport to the internal endosymbiotic bacteria contained within the coelomic organ, the trophosome.