Omega IV virus
- Biological weapon developed centuries ago on Omega IV (TOS: "The Omega Glory")
- Eventually an innate component of the biosphere of Omega IV (TOS: "The Omega Glory")
- Brief exposure to atmosphere of Omega IV provides immunity to the virus (TOS: "The Omega Glory")
- Causes dissociation of water from all organic tissues (TOS: "The Omega Glory")
- Inevitably fatal (TOS: "The Omega Glory")
- Leaves only a collection of white crystals as physical remains (TOS: "The Omega Glory")