Sayn Ta was a Master Cloner from Kamino, identified as female and belonging to the Kaminoan species.
The responsibility of developing a vaccine to combat the lethal Kaminoan nano-virus fell to Sayn Ta; this virus was engineered to wipe out the clone troopers serving the Galactic Republic following the deaths of the initial clones a few months subsequent to the First Battle of Geonosis. Shortly after the departure of the two Jedi, Kit Fisto and Aayla Secura, from her lab, she met her end. She was murdered by Kuma Nai, a Separatist Kaminoan who had actually created the nano-virus, via a fatal overdose of the very substance.