B R O O D W A R
		ZERG STRUCTURES
		Extractor		Hatchery				Creep Colony
		Spawning Pool				Evolution Chamber
	Sunken Colony			Lair				Spore Colony
		Hydralisk Den
		Queen's Nest						Spire
				Hive
		Defiler's Mound		Nidus Canal		Ultralisk Cavern		Greater Spire
	Requires
	Morphs into