Sym-Bac

Sym-Bac is the name given by Dr. Ian Coxen and his team to the synthetic bacteria developed by the Chimera, which helps them to regenerate.

History
Chimera have amazing metabolic rates that enable them to heal from injuries very quickly; however, their healing abilities are further complimented by use of an artificial bacteria which amplifies their ability to regenerate significantly. The bacteria are suspended in a yellow liquid called the Sym-Bac serum, which is in turn found in small cylinders for storage. The bacteria are destroyed during the healing process, requiring further injections of the substance if more damage is sustained.

It is unknown if the Sym-Bac also works on humans; Sgt. Nathan Hale was able to regenerate using the serum, but he had been infected by the Chimeran virus at the time, and therefore he shared some traits with them.