Tri-nucleic fungi was a type of fungus that could be found on Kabrel I. Tri-nucleic fungi could be used in the production of Ketracel-white and during the Dominion War the Dominion attempted to negotiate a trade that would see them gain Kabrel I, which would have allowed the Dominion to create vast amounts of Ketracel-white to fuel their war machine. (DS9: "Statistic Probabilities"; The Dominion War Sourcebook: The Fires of Armageddon)