AGREEMENTAgreement • September 23rd, 2009 • Helicos Biosciences Corp • Pharmaceutical preparations
Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, each of the undersigned hereby agrees that this Amendment No. 1 to Schedule 13D is filed on behalf of each of them. This Agreement may be executed in any number of counterparts, each of which shall be deemed an original.
