EXHIBIT 31.1
CERTIFICATION
I, George W. Dunbar, Jr., certify that:
1. | I have reviewed this Form 10-K/A of Aastrom Biosciences, Inc.; and | ||
2. | Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report. |
Date: March 14, 2008
/s/ George W. Dunbar, Jr. | ||||
George W. Dunbar, Jr. | ||||
Chief Executive Officer and President (Principal Executive Officer) Chief Financial Officer (Principal Financial Officer) | ||||