EXHIBIT 21.1

Subsidiaries of the Registrant		State of Incorporation
1) Chemtech Services, Inc.		Delaware
2) Astrogenetix, Inc.		Delaware
3) 1st Detect Corporation		Delaware
4) Agriculture Technology Corporation		Delaware
5) Medikinetix, Inc.		Delaware
6) Astral Images Corporation		Delaware
7) Astrotech Technologies, Inc.		Delaware
8) BreathTech Corporation		Delaware
9) AgLAB Inc.		Delaware
10) Cargo Security Center International, Inc.		Delaware