JOINT FILING AGREEMENTJoint Filing Agreement • March 12th, 2007 • D. E. Shaw Meniscus Portfolios, L.L.C. • In vitro & in vivo diagnostic substances
In accordance with Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, each of the undersigned Reporting Persons hereby agrees to the joint filing, along with all other such Reporting Persons, on behalf of each of them of a statement on Schedule 13G (including amendments thereto) with respect to the Common Stock of Quidel Corporation, and that this Agreement be included as an Exhibit to such joint filing. This Agreement may be executed in any number of counterparts, all of which taken together shall constitute one and the same instrument.
