Ship of Theseus is developing a fleet of biologics based on the homeobox (HOX) family of transcription factors.  The 39 HOX genes are master regulators of many context-specific cell phenotypes and coordinated tissue-level behaviors.

​The 39 Homeobox genes can be thought of as a piano with 39 keys. By playing different chords (different combinations of HOXs), almost any cell behavior can be generated.​