1 EXHIBIT 21 SUBSIDIARIES OF THE REGISTRANT List of Subsidiary Corporations State Of Incorporation - ------------------------------- ---------------------- Arbor Drugs - Civic Incorporated Michigan A.D.I. Realty, Incorporated Michigan Children's Hospital of Michigan Outpatient Pharmacy, Inc.(51% owned) Michigan Medical Center Pharmacies, Inc.(51% owned) Michigan Richard Investment Company Michigan E.F. Mile Corporation Michigan Pharmacy Advisory Company Michigan All subsidiaries conduct business using the names above. 58