Gen Probe Inc Watch

from SC 13G 1 page Ex-1.1 Otherdoc 2 0002.txt Joint Filing Agreement Exhibit 1.1 Joint Filing Agreement the Undersigned Hereby Agree That the Statement on This Schedule 13g, Dated May 9, 2003, (The "Schedule 13g"), With Respect to the Common Stock, Par Value $.0001 Per Share, of Gen-Probe Incorporated Is Filed on Behalf of Each of US Pursuant to and in Accordance With the Provisions of Rule 13d-1(k) Under the Securities and Exchange Act of 1934, as Amended, and That This Agreement Shall Be Included as an Exhibit to This Schedule 13g. Each of the Undersigned Agrees to Be Responsible for the Timely Filing of the Schedule 13g, and for the Completeness and Accuracy of the Information Concerning Itself Contained Therein. This Agreement May Be Executed in Any Number of Counterparts, All of Which Taken Together Shall Constitute One and the Same Instrument. in Witness Whereof, the Undersigned Have Executed This Agreement as of the 9th Day of May, 2003. Orbimed Advisors LLC By: /S/ Samuel D. Isaly Name: Samuel D. Isaly Title: Managing Member Orbimed Capital LLC By: /S/ Samuel D. Isaly Name: Samuel D. Isaly Title: Managing Member By: /S/ Samuel D. Isaly Name: Samuel D. Isaly

from SC 13G 1 page Ex-1.1 Otherdoc 2 0002.txt Joint Filing Agreement Exhibit 1.1 Joint Filing Agreement the Undersigned Hereby Agree That the Statement on This Schedule 13g, Dated May 9, 2003, (The "Schedule 13g"), With Respect to the Common Stock, Par Value $.0001 Per Share, of Gen-Probe Incorporated Is Filed on Behalf of Each of US Pursuant to and in Accordance With the Provisions of Rule 13d-1(k) Under the Securities and Exchange Act of 1934, as Amended, and That This Agreement Shall Be Included as an Exhibit to This Schedule 13g. Each of the Undersigned Agrees to Be Responsible for the Timely Filing of the Schedule 13g, and for the Completeness and Accuracy of the Information Concerning Itself Contained Therein. This Agreement May Be Executed in Any Number of Counterparts, All of Which Taken Together Shall Constitute One and the Same Instrument. in Witness Whereof, the Undersigned Have Executed This Agreement as of the 9th Day of May, 2003. Orbimed Advisors LLC By: /S/ Samuel D. Isaly Name: Samuel D. Isaly Title: Managing Member Orbimed Capital LLC By: /S/ Samuel D. Isaly Name: Samuel D. Isaly Title: Managing Member By: /S/ Samuel D. Isaly Name: Samuel D. Isaly