Anti-zerg nanites

"I heard there was a cure. Then I heard there wasn't. MAKE UP YOUR MINDS."

- A Dominion marine on anti-zerg nanites^(src)

Anti-zerg nanites are a form of advanced nano-technology. They are used to sever infested terrans from the Zerg Swarm and some versions can even temporarily reverse the infestation process.

Terran Experiments

	The following article or section contains lore from the StarCraft RPG, which is not regarded as canon. Elements may be regarded as 'flavor lore' however.

A mutate

Terran experiments with a captured zerg brood resulted in the creation of mutates such as Sistask, who became a member of the Alliance. Nanites were used to keep the mutates' violent impulses in check... barely.

Protoss Experiments

In the wake of the Brood War, the protoss had devised a "radical nanotech serum" which they theorized could reverse the infestation process. This was tested by Artanis when Alexei Stukov was been resurrected by a zerg cerebrate, Kaloth, and had returned to the world of Braxis. Artanis summoned Jim Raynor, and along with Taldarin, fought through the zerg defenders and injected the serum into Stukov, reverting him to human. The serum allowed him to maintain his humanity for a time, but the cure slowly failed, reverting him back to an infested terran.

The nanotech could not be delivered efficiently in large quantities. Since then, the zerg have likely developed an immunity to the nanotech.

Stukov was brought to the Moebius Foundation, which studied the nanites as they slowly failed and he reverted into an infested terran.

After the End War, the protoss still had no true reliable cure for infestation, though they had many treatements that were able to slow its spread.