Joint Filing Agreement pursuant to Rule 13d-1(k)(1)(iii) under the Securities and Exchange Act of 1934, as amended.Joint Filing Agreement • July 22nd, 2003 • Estate of Gordon a Cain • In vitro & in vivo diagnostic substances
Each of the undersigned hereby agrees to be included in the filing of the Amendment No. 1 to the Schedule 13D dated July 22, 2003 with respect to the issued and outstanding Common Stock of Lexicon Genetics Incorporated beneficially owned by each of the undersigned, respectively.
