Tech lab

The terran tech lab is an add-on in StarCraft II. Its modular design enables it to be attached to a barracks, factory or starport.

A structure attached to a tech lab can produce a higher tier of units. For instance, a factory attached to a tech lab can produce siege tanks, a barracks attached to a tech lab can produce marauders , and a Tech Lab attached to a Starport can produce banshees and nighthawks.

Tech Labs can also research upgrades. For example, a tech lab attached to a Barracks can upgrade marines and one attached to a factory can research the siege mode for siege tanks.

Note that a Terran structure cannot be attached to both a tech lab and a nuclear reactor, so it cannot enjoy the benefits of both.

Development
When the Medic was available, the Caduceous Reactor upgrade was available on Tech Lab.

Development
Previous researchs/upgrades:
 * Fighter Tech

At earlier builds the Viking was built on the Factory at ground mode, but needed a Fighter Tech upgrade to enable transforming to air mode.

Development
Previous researchs/upgrades:
 * Defensive Matrix Field
 * Cost:150 150  110 seconds
 * Hotkey:D
 * "Allows the Nomad to use the Defensive Matrix Field ability. Defensive Matrix Field creates a damage suppression field at target location which reduces all incoming damage by 50%."

The Nomad (later Vulkan, now Nightwawk) had this ability along with other unknown on Blizzcon 07. No longer on the game.