Cellular Technical Services Co. Inc.

Phillip Frost, M.D. Dr. Frost became the CEO and Chairman of OPKO Health, Inc. upon the consummation of the merger of Acuity Pharmaceuticals Inc., Froptix Corporation and eXegenics, Inc. on March 27, 2007 (referred to as the Acquisition ). Dr. Frost was named the Vice Chairman of the Board of Teva Pharmaceutical Industries, Limited (NasdaqGS:TEVA), or Teva, in January 2006 when Teva acquired IVAX Corporation, or IVAX. Dr. Frost had served as Chairman of the Board of Directors and Chief Executive Officer of IVAX Corporation since 1987. He was Chairman of the Department of Dermatology at Mt. Sinai Medical Center of Greater Miami, Miami Beach, Florida from 1972 to 1986. Dr. Frost was Chairman of the Board of Directors of Key Pharmaceuticals, Inc. from 1972 until the acquisition of Key Pharmaceuticals by Schering Plough Corporation in 1986. Dr. Frost was named Chairman of the Board of Ladenburg Thalmann Financial Services Inc. (NYSE Amex: LTS), an investment banking, asset management, and securities brokerage firm providing services through its principal operating subsidiary, Ladenburg Thalmann & Co. Inc., in July 2006 and has been a director of Ladenburg Thalmann since March 2005. Dr. Frost also serves as Chairman of the Board of Directors of Ideation Acquisition Corp., a special purpose acquisition company formed for the purpose of acquiring businesses in digital media (NYSE Amex: IDI), Modigene Inc., a development stage biopharmaceutical company (OTCBB: MODG), and Castle Brands, a developer and marketer of premium brand spirits (NYSE Amex: ROX). He serves on the Board of Regents of the Smithsonian Institution, as a member of the Board of Trustees of the University of Miami, a Trustee of each of the Scripps Research Institutes, the Miami Jewish Home for the Aged, and the Mount Sinai Medical Center. Dr. Frost is also a director of Continucare Corporation, a provider of outpatient healthcare and home healthcare services (NYSE Amex: CNU), and Northrop Grumman Corp., a global defense and aerospace company (NYSE: NOC).