Compound B-5801 is a terran codename for a compound once secreted by the worker caste of the gashyrr wasps. The compound is resilient enough to last for years, making the workers slow but incredible builders.

When the gashyrr wasps were assimilated into the Zerg Swarm, the compound was preserved, and became the foundation for zerg colony structures. Unlike the wasps however, drones became the biological starting point for these structures, rather than constructing them.[1]


  1. 2014-07-31, Drone: Science. Blizzard Entertainment, accessed on 2014-08-07
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