Ngen, Inc. Watch

from 8-K 20 pages Securities Purchase Agreement

from 8-K 5 pages February 5, 2007 Mr. Robert Saltmarsh, Chief Financial Officer (Sent via Electronic Mail) Nanogen, Inc. 10398 Pacific Center Court San Diego, Ca 92121 Mr. Saltmarsh: Thank You for the Opportunity to Work With You and Your Company, Nanogen, Inc

from SC 13G/A ~5 pages Declaration of Consent to Joint Filing by Sanofi-Aventis and Aventis Pharma Deutschland Gmbh. Sanofi-Aventis Date: February 8, 2005 By: /S/ Jean-Claude Leroy Jean-Claude Leroy Chief Financial Officer Aventis Pharma Deuschland Gmbh Date: February 8, 2005 By: /S/ Heinz-Werner Meier Heinz-Werner Meier Chief Executive Officer By: /S/ Dieter Kohl Dieter Kohl Chief Financial Officer

from 8-K 28 pages Nanogen, Inc. 4,250,000 Shares of Common Stock Placement Agency Agreement March 4, 2004

from SC 13G/A 1 page <page> Exhibit 1 Agreement as to Joint Filing of Schedule 13g Each of the Undersigned Hereby Affirms That It Is Individually Eligible to Use Schedule 13g, and Agrees That This Schedule 13g Is Filed on Its Behalf. Date: December 6, 2000 Salomon Smith Barney Inc. By: /S/ Howard M. Darmstadter Name: Howard M. Darmstadter Title: Assistant Secretary Salomon Brothers Holding Company Inc By: /S/ Howard M. Darmstadter Name: Howard M. Darmstadter Title: Assistant Secretary Salomon Smith Barney Holdings Inc. By: /S/ Howard M. Darmstadter Name: Howard M. Darmstadter Title: Assistant Secretary Citigroup Inc. By: /S/ Joseph B. Wollard Name: Joseph B. Wollard Title: Assistant Secretary

from S-3 ~50 pages Underwriting agreement

from S-1/A ~20 pages Underwriting agreement

from S-1 ~20 pages Underwriting agreement